Question

If one of the factor of the expression x4 – 15x2 + 50 is x2 – 10, what is the other factor?

Select one:
a. x2 - 2
b. x2 – 10
c. x - 5
d. x2 – 5

Answer 1

Answer:

x^4-15x^2+50

=x^4-10x^2-5x^2+50

=x^2(x^2-10)-5(x^2-10)

=(x^2-10)(x^2-5)

so, if one factor is (x^2-10) then another factor is (x^2-5)

so, (d) is the correct answer

Answer 2

Answer:

x^2-5(d) is correct bro