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mezya [45]
3 years ago
6

Please solve and show work

Mathematics
1 answer:
zheka24 [161]3 years ago
8 0

Answer:

Step-by-step explanation:

9. f(g(-n))

g(-n) = -(n²+5) = -n²-5

f(g(-n)) = 2n+1 (-n²-5 )

2n(-n²-5)+1(-n²-5 )

-2n³-10n-n²-5

-2n³-n²-10n-5

n²(-2n-1) +5(2n-1)

(n²+5)(2n-1)

10. (2x+2)(x³+3)

2x(x³+3)+2(x³+3)

2x⁴ + 2x³ +6x +6

2x³(x+1)+6(x+1)

(2x³+6)(x+1

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Factorise 5x 2 + 20x
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5x^2 + 20x = 5x(x + 4)

Step-by-step explanation:

Here, we want to factorize;

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To do this, we start by writing the common factors

The common actor that we can see which is in the form of the gcf of both is 5x

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3 years ago
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Alex777 [14]

Answer:

dAB=10\ units

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