Question

factorise 8a^4-18a square+9​

Answer 1

Answer:

${a}^{2} = 23$

Step-by-step explanation:

$8a4 - 18 {a}^{2} + 9 \\ 8 {a}^{2} 4 - 27 {a}^{2} \\ (8a) = 27 {a}^{2} - 4 \\ (8a) = 31 {a}^{2} \\ a - a = 31 - 8 \\ {a}^{2} = 23$