Question

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Answer 1

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-15

Step-by-step explanation:

$(2 {x} - 5)(x + 3)$

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

$2 {x}^{2} + 6x - 5x - 15$

$2 {x + x - 15}$

a= -15

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Answer 2

Answer:

a = -15

Step-by-step explanation:

here, $(2x - 5) (x + 3) = 2x^{2} + x + a$

      = $2x^{2} + 6x - 5x - 15 = 2x^{2} + x +a$

      = $2x^{2} + x - 15 = 2x^{2} + x + a$

      = a = -15

Because, we have to find it in positive form but it comes in negative form so we take the vale as a -15.

= $2x^{2} + x + (-15) = 2x^{2} + x + a$

We can find the value of a from above.

That is a = -15.

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