Question

What should be the value of a, if the value of 3x^2+5x+a  is -2 for x = -2?​

Answer 1

Answer:

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Step-by-step explanation:

Given:

3x^2 +5x + a = -2 when x = -2

To find:

The value of a

Solution:

When x = -2,

3 (-2)^2 + 5 (-2) + a = -2

3(4) -10 + a = -2

12 - 10 + a = -2

2 + a = -2

a = -2 -2

a = -4

The value of a is -4

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