Question

Find each of the following products


i) (3y-8) x (5y-2)


ii) (x2
-5x+8) x (x2+2)​

Answer 1

Answer:

Step-by-step explanation:

i) (3y-8) x (5y-2)

3y (5y-2) -8 (5y-2)

15y² - 6y -40y - 16

15y² - 46y - 16

Answer 2

Answer:

1) $15y^2-46y+16$

2) $x^4-5x^3+10x^2-10x+16$

Step-by-step explanation:

$1) (3y-8) \times (5y-2)$

$\Rightarrow 3(5y-2)-8(5y-2)$

$\Rightarrow 15y^2-6y-8(5y-2)$

$\Rightarrow 15y^2-6y-40y+16$

$\Rightarrow 15y^2-46y+16$

$\green{15y^2-46y+16}$

$2)(x^2-5x+8) \times(x^2+2)$

$\Rightarrow x^4-5x^3+8x^2+2x^2-10x+16$

$\Rightarrow x^4-5x^3+10x^2-10x+16$

$\green{x^4-5x^3+10x^2-10x+16}$