Question 88458: Good day to all,I need some help with some problems,the first one is,Simplify:x(4x^2+3x-5)-2(4-x^2).The next one is,Find the product:(b+2)(b+6).The third one is,Find the product:(7x+1)(x^2+1).And the last one is,Find the product:(2x+6)(x-10).Thanks to whoever can help me.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! some problems,the first one is,Simplify:x(4x^2+3x-5)-2(4-x^2).
= 4x^3+3x^2-5x-8+2x^2
= 4x^2 + 5x^2 -5x -8
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The next one is,Find the product:(b+2)(b+6).
(b+2)(b+6) = b(b+6)+2(b+6) = b^2+6b+2b+12 = b^2+8b+12
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The third one is,Find the product:(7x+1)(x^2+1).
= 7x(x^2+1) + 1(x^2+1)
= 7x^3+7x+x^2+1
= 7x^3+x^2+7x+1
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And the last one is,Find the product:(2x+6)(x-10).
= 2x(x-10)+6(x-10)
= 2x^2-20x+6x-10
= -2x^2-14x-10
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Cheers,
Stan H.
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