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ruslelena [56]
3 years ago
7

Find any real solutions for the following equations x3 = - 64

Mathematics
1 answer:
Alex777 [14]3 years ago
8 0
Hello,

x^3+64=0
==>(x+4)(x²-4x+16)=0
==>x=-4 because x²-4x+16 is not factorable in R.

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If f(x) = x2 – 2x, find:<br> f(-3) = [?]
allsm [11]

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\boxed{\sf f(-3) = 9}

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\sf f(x) =  {x}^{2}  - 2x

To Find:

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\sf \implies f(x) =  {x}^{2}  - 2x \\  \\  \sf \implies f( - 3) =  {( - 3)}^{2}  - 2 ( - 3) \\  \\  \sf \:  \:  \:  \:  \:  \:   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 3 - ( - 6) \\  \\  \sf \:  \:  \:  \:  \:  \:   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  =3 + 6 \\  \\  \sf \:  \:  \:  \:  \:  \:   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  =9

5 0
3 years ago
Molly is making cookies. She can use 1/2 batch of cookie dough to make 2 cookies. How much cookie dough would she need to use to
fiasKO [112]
One and a half batch of dough
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