Question

4a answer multiply the following monomials by trinomials

Answer 1

-5b²×4b²/5-5b²×3b+5b²

=4b⁴-15b³+5b

Answer 2

-4b^4-15b^3+5b^2

(-5b^2) by (4/5b^2+3b-1)

= 4/5b^2×-5b^2+3b×-5b^2-1×-5b^2

= (-4b^4)+(-15b^3)-(-5b^2)

= -4b^4-15b^3+5b^2

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