Question

Simplify: (x − 7)(6x − 3) A. 6x2 + 21 B. 6x2 + 39x − 21 C. 7x2 − 10 D. 6x2 − 45x + 21

Answer 1

Answer:

6x2−45x+21 D.

Step-by-step explanation:

(x+−7)(6x+−3)

=(x)(6x)+(x)(−3)+(−7)(6x)+(−7)(−3)

=6x^2−3x−42x+21

=6x^2−45x+21

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Answer 2

Answer:

6x^2 -45x +21

Step-by-step explanation:

(x − 7)(6x − 3)

FOIL

first; x*6x = 6x^2

outer: -3x

inner: -7*6x = -42x

last: -3*-7 = 21

Add them together

6x^2 -3x-42x +21

Combine like terms

6x^2 -45x +21