Question

solve for x. write the smaller solution first, and the largest solution second 4x^2+72x+320=0​

Answer 1

Step-by-step explanation:

4x^2 + 72x + 320 ====>

4x^2 + 40x + 32x + 320

4x( x + 10 ) + 32( x + 10 )

(4x + 32)(x + 10).

To find zeroes or solutions of x --->

Smaller solution :

x + 10 = 0.

Therefore,

x = -10.

Larger solution :

4x + 32 = 0.

4x = -32.

Therefore,

x = -32/4 = -8.

Therefore,

Solutions of x are -10 and -8.

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