truehamzamraza truehamzamraza

02-05-2020
Mathematics

contestada

Simplify the following expression.

(3x + 4)(x − 7)
Answers-
A. 3x2 − 25x − 11
B. 3x2 − 25x − 28
C. 3x2 − 17x − 11
D. 3x2 − 17x − 28

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MisterBigBrain MisterBigBrain

02-05-2020

Answer:

D. 3x2 − 17x − 28

Step-by-step explanation:

(3x + 4)(x − 7)

Multiply the parentheses:

3x x x - 3x x 7 + 4x - 4 x 7

Multiply:

3x squared - 21x + 4x - 28

Collect like terms:

3x squared - 17x - 28

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