What are the solutions to f(x)=(x^2+2)(x^2-5+3)

Ineed in figuring out this problem.

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36

Find the value of x. give reasons to justify your solutions! l, m ∈ kn