Bonsoir,
Factoriser :
a. -7x + 7y
= 7 (- x + y)
b. 4a + 4
= 4 (a + 1)
c. 9x + 3y
= 3 (3x + y)
d. 25x - 25y
= 25 (x - y)
e. 4x² + 7x
= x (4x + 7)
f. 15x² - 5x
= 5x (3x - 1)
g. 12x³ + 5x²
= x² (12x + 5)
h. 12x²y + 6xy²
= 6xy (2x + y)
Hello,
-7x + 7y = -7 * x + 7 * y = 7(-x + y)
4a + 4 = 4 * a + 4 = 4(a + 1)
9x + 3y = 3 * 3 * x + 3 * y = 3(3x + y)
25x - 25y = 25 * x - 25 * y = 25(x - y)
4x² + 7x = 4 * x * x + 7 * x = x(4x + 7)
15x² - 5x = 5 * 3 * x * x - 5 * x = 5x(3x - 1)
12x^3 + 5x² = 12x * x² + 5 * x² = x²(12x + 5)