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yg b (4x-5) (x+2)
yg c (3x-4) (x-2)
yg d (3x+2) (2x-5)
a. 2x² + 7x + 6 = (2x² + 4x) + (3x + 6)
= 2x(x + 2) + 3(x + 2)
= (2x + 3)(x + 2)
b. 4x² + 3x - 10 = (4x² + 8x) + (-5x - 10)
= 4x(x + 2) - 5(x + 2)
= (4x - 5)(x + 2)
c. 3x² - 10x + 8 = (3x² - 6x) + (-4x + 8)
= 3x(x - 2) - 4(x - 2)
= (3x - 4)(x - 2)
d. 6x² - 11x - 10 = (6x² + 4x) + (- 15x -10)
= 2x(3x + 2) - 5(3x + 2)
= (2x - 5)(3x + 2)
I hope this helps ;)