Question

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

Answer 1

Given :  4x² + 72x + 320 =  0

To find : Value of x

Solution:

4x² + 72x + 320 =  0

Dividing by 4 on both sides

=> x² + 18x  + 80 = 0

=> x² + 8x + 10x + 80 = 0

=> x(x + 8) + 10(x + 8) = 0

=> (x + 10)(x + 8) =0

=> x = -10  ,  -8

Smaller Solution = -10

Larger solution = -8

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