Question

(9p2 – 8q2) (5p2 - 6q2)

Answer 1

(9p2 – 8q2) (5p2 - 6q2)

$9 {p}^{2} - 8 {p}^{2} \times 5 {p}^{2} - 6 {q}^{2} \\ = 1 {p}^{2} \times 5 {p}^{2} - 6 {q}^{2} \\ = 5 {p}^{4} - 6 {q}^{2}$

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