Please help with this, thankyouu

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Hi there!

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Let's solve for c.

Step 1: Add to both sides.

Step 2: Add to both sides.

Step 3: Factor out variable c.

Step 4: Divide both sides by .

Answer :

❀Hope this helped you!❀

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c = 3 and n = - 7

Step-by-step explanation:

Expand the left side and compare the coefficients of like terms on both sides.

(5x + 4)(2x - c) ← expand using FOIL

= 10x² - 5cx + 8x - 4c ← factor out x from each of the terms in x

= 10x² + x( - 5c + 8) - 4c

Given this is equal to 10x² + nx - 12, then

Comparing the constant terms

- 4c = - 12 ( divide both sides by - 4 )

c = 3

Comparing the coefficients of the x- terms

n = - 5c + 8 = - 5(3) + 8 = - 15 + 8 = - 7

Thus

c = 3 and n = - 7

c.

step-by-step explanation: