Question

simplify :5a^2-6a(a-2)+a(3+5a)​

Answer 1

$5 a^2 - 6a(a - 2) + a(3 + 5a)$

$= 5 {a}^{2} - 6 {a}^{2} + 12a + 3a + 5 {a}^{2}$

$= 10 {a}^{2} - 6 {a}^{2} + 15a$

$= 4 {a}^{2} + 15a$

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