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Expand and simplify. a) 5(3x-1)+4(x^2-3x+3)(x+6)
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High School Teacher
Expand and simplify `5(3x-1)+4(x^2-3x+3)(x+6)` :
First we get rid of grouping symbols by using the distributive property:
`=> 15x-5+4[x^3+6x^2-3x^2-18x+3x+18]` Collect like terms:
`=>15x-5+4x^3+12x^2-60x+72` Collect like terms:
Thus the required answer is `4x^3+12x^2-45x+67`
Posted by embizze on February 4, 2012 at 6:12 AM (Answer #1)
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