Question

Which identity will you use to factorise 16p^4 -56 p^2q ^2 +49q^4? What will be its  factors? please please help me guys please please
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Answer 1

Answer:

(a - b)² = a² - 2ab + b²

Step-by-step explanation:

$16 {p}^{4} - 56 {p}^{2} {q}^{2} + 49 {q}^{4} \\ {(4 {p}^{2} )}^{2} - 2 \times 4 {p}^{2} \times 7 {q}^{2} + {(7 {q}^{2}) }^{2} \\ {(4 {p}^{2} - 7 {q}^{2} ) }^{2}$

Hope you get your answer