Question

Factorize : 9a2- 30ab + 25b2
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Answer 1

Answer:

${9a}^{2} - 30ab + 25 {b}^{2} \\ 9 {a}^{2} - 15ab - 15ab + 25 { b }^{2} \\ 3a(3a - 5b) - 5b(3a - 5b) \\ (3a - 5b)(3a - 5b) \\ {(3a - 5b)}^{2} \\ 3 {a}^{2} + 5 {b}^{2} - (2 \times 3 \times 5) \\ 3 {a}^{2} + 5 {b}^{2} - 30$