Question

factorise 2a^2+10a^2-28a​

Answer 1

Answer:

$= > 2a {}^{2} + 10a {}^{2} - 28a = 0\\ = > 12a {}^{2} - 28a = 0 \\ = > 4a(3a - 7) = 0 \\ = > 4a = 0 \\ = > a = 0 \\ = > now \\ = > 3a - 7 = 0 \\ = > 3a = 7 \\ = > a = \frac{7}{3}$