63 [Calculer.] À l'aide de l'identité remarquable donnée, factoriser les expressions algébriques suivantes.
a² + 2ab + b² = (a + b)²
1. x² +10x+25
2.9x² +6x+1
3. 2y +1+y², y appartient a R
4. 4x² +20x+25
a²-2ab + b² = (a - b)²
1. x² - 8x+16
2.9x² - 6x +1
3. z²-z+ 1/4, z appartient a R
4. 25+25x² - 50x
a²-b²=(a+b)(a - b)
1. a² - 144, a appartient a R
2.9x² - 16
3. x2/4 - 4/9
4. x²-7
a² + 2ab + b² = (a + b)²
1. x² +10x+25
2.9x² +6x+1
3. 2y +1+y², y appartient a R
4. 4x² +20x+25
a²-2ab + b² = (a - b)²
1. x² - 8x+16
2.9x² - 6x +1
3. z²-z+ 1/4, z appartient a R
4. 25+25x² - 50x
a²-b²=(a+b)(a - b)
1. a² - 144, a appartient a R
2.9x² - 16
3. x2/4 - 4/9
4. x²-7
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x² + 10x + 25 = (x + 5)²
9x² + 6x + 1 = (3x + 1)²
2y + 1 + y² = (y + 1/2)² + 3/4
4x² + 20x + 25 = (2x + 5)²
a² - 2ab + b² = (a - b)²
x² - 8x + 16 = (x - 4)²
9x² - 6x + 1 = (3x - 1)²
z² - z + 1/4 = (z - 1/2)² + 3/4
25 + 25x² - 50x = (5 - 5x)²
a² - b² = (a + b)(a - b)
a² - 144 = (a + 12)(a - 12)
9x² - 16 = (3x + 4)(3x - 4)
x²/4 - 4/9 = (x/2 -