Hannahello7 Hannahello7

22-09-2020
Mathematics

contestada

Multiply.
(5x+3)(5x - 3)
A. 25x2 + 9
B. 25x2 + 30x-9
c. 25x2 – 30x- 9
D. 25x2 - 9

Relax

Respuesta :

jimrgrant1 jimrgrant1

22-09-2020

Answer:

D

Step-by-step explanation:

Given

(5x + 3)(5x - 3)

Each term in the second factor is multiplied by each term in the first factor, that is

5x(5x - 3) + 3(5x - 3) ← distribute both parenthesis

= 25x² - 15x + 15x - 9 ← collect like terms

= 25x² - 9 → D

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