Question

please help me . I will give 25 points ​

Answer 1

(i) x^3 - 6x^2 + 3x + 10.

Sol'n. x^3 + x^2 - 7x^2 - 7x + 10x + 10.

= x^2(x+1) -7x(x+1)+10(x+1).

= (x+1)(x^2-7x+10).

= (x+1) (x-5) (x-2)

Hence, The Answer is (x+1)(x-5)(x-2).

(ii) 2y^3 - 5y^2 - 19y + 42.

Sol'n.

2y^3 - 4y^2 - y^2 + 2y - 21y + 42.

= 2y^2(y-2) -y(y-2) - 21(y-2)

= (y-2)(2y^2-y-21)

= (y-2)(2y-7)(y+3)

Hence, The Answer is (y-2)(2y-7)(y+3).

Answer 2

$\sqrt{2} {2}^{2}$

hope it helps you