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Question 4 of 40
Which of these is a correct expansion of (3x-2)(2x2+5)?
OA. 3x 2x2 + 3x 5+2 2x² +2.5
B. 3x 2x2 + 3x.5+ (-2) 2x2 + (-2).5
O C. 3x 2x²+(-2) 2x² + 2x².5+ (-2).5
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Sagot :

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Answer:

3x* 2x^2 +3x*5 -2 * 2x^2  -2 *5

Step-by-step explanation:

(3x-2)(2x^2+5)

We can FOIL to find the expansion

First 3x* 2x^2 = 6x^3

Outer 3x*5 = 15x

Inner -2 * 2x^2 = -4x^2

Last -2 *5 = -10

Add all the terms together

3x* 2x^2 +3x*5 -2 * 2x^2  -2 *5

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