Q. 433.7( 3 Votes )

Using factorization, find the roots of the quadratic equation: 8x^{ 2}-22x-21= 0.

Answer :

8x

^{ 2 }- 22x - 21 = 0

8x

^{ 2 }+ 6x - 28x - 21 = 0

2x(4x

^{ }+ 3) â 7(4x + 3) = 0

(2x - 7)(4x + 3) = 0

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