Question

QUESTION NO 28
15 POINTS....​

Answer 1

Answer:

a = 2

Step-by-step explanation:

Equation : 2x² + 2ax + 5x + 10

If (x + a) is a factor, then by substituting x = -a into the equation, the equation will return zero.

Substitute x = -a

2x² + 2ax + 5x + 10

= 2(-a)² + 2a (-a) + 5(-a) + 10

= 2a² - 2a² - 5a + 10

= -5a + 10

The equation will return zero

-5a + 10 = 0

-5a = -10

a = 2

Answer: a = 2

Answer 2

Answer:

a=2

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