Question

solve 21a^4-14a^2+42/7a^2​

Answer 1

refer the attachment.....please

Answer 2

Answer:

$21 {a}^{4} - 14 {a}^{2} + \frac{42}{7} {a}^{2} \\ 21 {a}^{4} - 14 {a}^{2} + 6 {a}^{2} \\ 21 {a}^{4} - 8 {a}^{2}$