Bonjour
Factoriser A = (2x + 5)(3x - 2) + (2x + 5)(7x + 6) Factoriser A = (2x + 5)(3x - 2) + (2x + 5)(7x + 6)
A = (2x + 5)(3x - 2 + 7x + 6)
A = (2x + 5)(10x + 4)
A = (2x + 5) * 2(5x + 2)
A = 2(2x + 5)(5x + 2)
-Factoriser B = x²- 6x + 9
B = x^2 - 2 * x * 3 + 3^2
B = (x - 3)^2
-Factoriser C = 36x² - 25
C = (6x)^2 - 5^2
C = (6x - 5)(6x + 5)
-Factoriser D = (2x - 3)(2x + 3) - (4x - 7)(2x - 3)
D = (2x - 3)(2x + 3 - 4x + 7)
D = (2x - 3)(-2x + 10)
D = (2x - 3) * 2(-x + 5)
D = 2(2x - 3)(-x + 5)
-Factoriser E = (2x + 5)(x + 3) + (x + 3)(5x + 3)
E = (x + 3)(2x + 5 + 5x + 3)
E = (x + 3)(7x + 8)
-Factoriser F = 4x² - 49
F = (2x)^2 - 7^2
F = (2x - 7)(2x + 7)
-Factoriser G = x² + 20x + 100
G = x^2 + 2 * x * 10 + 10^2
G = (x + 10)^2
-Factoriser H = (x + 3)² - 16
H = (x + 3)^2 - 4^2
H = (x + 3 - 4)(x + 3 + 4)
H = (x - 1)(x + 7)
