3 years ago

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. What is the resulting expression?

1 answer:

eduard3 years ago

5 0

4x^4 - 20x^2 - 3x^2 + 15
= (4x^2)(x^2) + (4x^2)(-5) + (-3)(x^2) + (-5)(-3)
= (4x^2)(x^2 - 5) + (-3)(x^2 - 5)
= (4x^2 - 3)(x^2 - 5)

Therefore the answer is (4x^2 - 3)(x^2 - 5)

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