سلسلة تمارين رقم 1

A = 2(x + 3) + 4(x - 1)

B = (x + 2)(x - 3)

C = (2x + 1)²

D = (x - 5)²

E = (x + 3)(x - 3)

الحل:

A = 2x + 6 + 4x - 4 = 6x + 2

B = x² - 3x + 2x - 6 = x² - x - 6

C = (2x)² + 2(2x)(1) + 1² = 4x² + 4x + 1

D = x² - 2(x)(5) + 5² = x² - 10x + 25

E = x² - 3² = x² - 9

F = 3x + 12

G = x² + 6x + 9

H = 25x² - 16

I = (x + 1)(x + 2) + (x + 1)(2x - 3)

الحل:

F = 3(x + 4)

G = x² + 2(x)(3) + 3² = (x + 3)²

H = (5x)² - 4² = (5x - 4)(5x + 4)

I = (x + 1)[(x + 2) + (2x - 3)] = (x + 1)(3x - 1)