Resposta:
Explicação passo a passo:
1 - x² = 36 2 - x² = 49
x =[tex]\sqrt{36}[/tex] x = [tex]\sqrt{49\\[/tex]
x = 6 x = 7
3 - x² = 900 4 - x² = 400
x = [tex]\sqrt{900}[/tex] x = [tex]\sqrt{400}[/tex]
x = 30 x = 20
5 - x² = 3600 6 - x² = 169
x = [tex]\sqrt{3600}[/tex] x = [tex]\sqrt{169}[/tex]
x = 60 x = 13
7 - 4y x² = 100 8 - 81x² = 144
x = [tex]\sqrt{100}[/tex] x = [tex]\sqrt{144}[/tex]
x = 10 x = 12
4y + 10 = 0 81 * 12 = 972
4y = - 10
y = -10/4
y = -2,5
[tex]1)~~~x^2=36\\ \\ x=\pm\sqrt{36} \\ \\ x=\pm6\\ \\ S=\{-6,6\}[/tex]
----------------------------------
[tex]2)~~x^2=49\\ \\ x=\pm\sqrt{49} \\ \\ x=\pm7\\ \\ S=\{-7,7\}[/tex]
-------------------------------------------
[tex]3)~~x^2=900\\ \\ x=\pm\sqrt{900} \\ \\ x=\pm\sqrt{9} .\sqrt{100} \\ \\ x=\pm30\\ \\ S=\{-30,30\}[/tex]
-----------------------------
[tex]4)~~x^2=400\\ \\ x=\pm\sqrt{400} \\ \\ x=\pm\sqrt{4} .\sqrt{100} \\ \\ x=\pm20\\ \\ S=\{-20,20\}[/tex]
-------------------------------
[tex]5)~~x^2=3600\\ \\ x=\pm\sqrt{3600} \\ \\ x=\pm\sqrt{36} .\sqrt{100} \\ \\ x=\pm60\\ \\ S=\{-60,60\}[/tex]
[tex]6)~~x^2=169\\ \\ x=\pm\sqrt{169} \\ \\ x=\pm13\\ \\ S=\{-13,13\}[/tex]
---------------------------------------
[tex]7)~~49x^2=100\\ \\ x^2=\dfrac{100}{49}\\\\ \\ x=\pm\sqrt{\dfrac{100}{49}} \\ \\ \\ x=\pm\dfrac{10}{7}\\ \\ \\ S=\{-\dfrac{10}{7},\dfrac{10}{7}\}[/tex]
[tex]8)~~81x^2=144\\ \\ \\ x^2=\dfrac{144}{81}\\ \\ \\ x=\pm\sqrt{\dfrac{144}{81}} \\ \\ \\ x=\pm\dfrac{12}{9}[/tex]
----------------------------------------------
[tex]9)~~~121x^2=81\\ \\ \\ x^2=\dfrac{81}{121}\\ \\ \\ x=\pm\sqrt{\dfrac{81}{121}} \\ \\ \\ x=\pm\dfrac{9}{11}\\ \\ \\ S=\{-\dfrac{9}{11},\dfrac{9}{11}\}[/tex]
Copyright © 2024 ELIBRARY.TIPS - All rights reserved.
Lista de comentários
Resposta:
Explicação passo a passo:
1 - x² = 36 2 - x² = 49
x =[tex]\sqrt{36}[/tex] x = [tex]\sqrt{49\\[/tex]
x = 6 x = 7
3 - x² = 900 4 - x² = 400
x = [tex]\sqrt{900}[/tex] x = [tex]\sqrt{400}[/tex]
x = 30 x = 20
5 - x² = 3600 6 - x² = 169
x = [tex]\sqrt{3600}[/tex] x = [tex]\sqrt{169}[/tex]
x = 60 x = 13
7 - 4y x² = 100 8 - 81x² = 144
x = [tex]\sqrt{100}[/tex] x = [tex]\sqrt{144}[/tex]
x = 10 x = 12
4y + 10 = 0 81 * 12 = 972
4y = - 10
y = -10/4
y = -2,5
Resposta:
[tex]1)~~~x^2=36\\ \\ x=\pm\sqrt{36} \\ \\ x=\pm6\\ \\ S=\{-6,6\}[/tex]
----------------------------------
[tex]2)~~x^2=49\\ \\ x=\pm\sqrt{49} \\ \\ x=\pm7\\ \\ S=\{-7,7\}[/tex]
-------------------------------------------
[tex]3)~~x^2=900\\ \\ x=\pm\sqrt{900} \\ \\ x=\pm\sqrt{9} .\sqrt{100} \\ \\ x=\pm30\\ \\ S=\{-30,30\}[/tex]
-----------------------------
[tex]4)~~x^2=400\\ \\ x=\pm\sqrt{400} \\ \\ x=\pm\sqrt{4} .\sqrt{100} \\ \\ x=\pm20\\ \\ S=\{-20,20\}[/tex]
-------------------------------
[tex]5)~~x^2=3600\\ \\ x=\pm\sqrt{3600} \\ \\ x=\pm\sqrt{36} .\sqrt{100} \\ \\ x=\pm60\\ \\ S=\{-60,60\}[/tex]
-------------------------------
[tex]6)~~x^2=169\\ \\ x=\pm\sqrt{169} \\ \\ x=\pm13\\ \\ S=\{-13,13\}[/tex]
---------------------------------------
[tex]7)~~49x^2=100\\ \\ x^2=\dfrac{100}{49}\\\\ \\ x=\pm\sqrt{\dfrac{100}{49}} \\ \\ \\ x=\pm\dfrac{10}{7}\\ \\ \\ S=\{-\dfrac{10}{7},\dfrac{10}{7}\}[/tex]
-----------------------------
[tex]8)~~81x^2=144\\ \\ \\ x^2=\dfrac{144}{81}\\ \\ \\ x=\pm\sqrt{\dfrac{144}{81}} \\ \\ \\ x=\pm\dfrac{12}{9}[/tex]
----------------------------------------------
[tex]9)~~~121x^2=81\\ \\ \\ x^2=\dfrac{81}{121}\\ \\ \\ x=\pm\sqrt{\dfrac{81}{121}} \\ \\ \\ x=\pm\dfrac{9}{11}\\ \\ \\ S=\{-\dfrac{9}{11},\dfrac{9}{11}\}[/tex]