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Can anyone help me with these?

Can anyone help me with these?-example-1

1 Answer

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Answer:

Explanation:

Distributive property: a*(b + c) = ab + ac

16)5x²(7 - x²) = 5x²*7 - 5x²*x²

=35x² - 5x⁴

17)

10x(4 - 3x) = 10x*4 - 10x*3x

= 40x - 30x²

18) 9( y +4) = 9*y + 9*4

= 9y + 36

19) 3(4 - x) - 3(2 - x) = 3*4 - 3*x -3*2 - x*(-3)

= 12 - 3x - 6 + 3x {add/subtract like terms}

= 12 - 6 - 3x + 3x

= 6

20) 6y + 6(y - 4) = 6y + 6*y - 6*4

= 6y + 6y - 24

= 12y - 24

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