Answer:
(4x^2-5) x (2x^2-9)
Step-by-step explanation:
01.) Write -46x^2 as a difference
8x^4-10x^2-36x^2+45
02.) Factor out 2x^2 from the expression
8x^4-10x^2 -36x^2+45
2x^2 * (4x^2-5) - 36x^2+45
03.) Factor out -9 from the expression
2x^2 * (4x^2-5) - 9(4x^2-5)
2x^2 *(4x^2-5)-9(4x^2-5)
04. Factor out 4x^2-5 from the expression
(4x^2-5) *(2x^2-9)
