Question

16x^2-16x-21 factories as a easy method​

Answer 1

Answer:

$x=\frac{7}{4}$   and  $x=\frac{3}{4}$

Step-by-step explanation:

1.   $16x^{2} -16x-21=0$

⇒$16x^{2} -28x+12x-21=0$

⇒$4x(4x-7)3(4x-7)=0$

⇒$(4x-7)(4x-3)=0$

⇒$4x-7=0$    and    $4x-3=0$

⇒$4x=7$          and         $4x=3$

⇒$x=\frac{7}{4}$            and         $x=\frac{3}{4}$

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