Question

solve for x : 4x²+5x+1=0 :​

Answer 1

Step-by-step explanation:

Let the 1st term be A, 2nd term be B and 3rd term be C.

A = 4

B = 5

C = 1

AC = 4 × 1 = 4

4 + 1 = 5

4x² + 4x + x + 1 = 0

4x (x + 1) + 1 (x + 1) = 0

(4x + 1) (x + 1) = 0

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(4x + 1) (x + 1) = 0

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This gives us 4x + 1= 0 or x + 1 = 0

x = - 1 ÷ 4 or x = - 1

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x = - 1 ÷ 4

x = - 1

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