1)Calcule:
a) (a+5)²
b) (4 X-2)²
c)(X+1)(X-1)
d)(7 X² -1)²
2) Resolva e reduza os termos semelhantes :
A)(X+1)²-4 X-5 X²
B)(X-6)²-(14+7 X)
C)(Y-2)²+5 X-2 Y
a) (a+5)²
b) (4 X-2)²
c)(X+1)(X-1)
d)(7 X² -1)²
2) Resolva e reduza os termos semelhantes :
A)(X+1)²-4 X-5 X²
B)(X-6)²-(14+7 X)
C)(Y-2)²+5 X-2 Y
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a²+5 a+ 5 a + 25
a²+10 a²+25
B)4 X -2×4 X -2=
16 X- 8 X-8 X +4=
16 X -16 X +4=
x=4
C)2 X+1 X-1 X -1
2 X -1
D)7 X²-1×7 X²-1
49 X -1-49 X -1=98 X