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3 years ago

7

-x2-2z for x=2, z=-4

2 answers:

sattari [20]3 years ago

5 0

-(2)2 = -4. 2(-4) = -8. -4 - (-8) = 4. The answer is 4

ddd [48]3 years ago

3 0

-12 because the answer says negative two multiply by 2 subtract 2 multiply by 4

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3 years ago

3.f(-4)-3.g(-2) please help me with this problem

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Step by step explanation:

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3 years ago

I don't understand :/

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3 years ago

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SashulF [63]

$\implies {\blue {\boxed {\boxed {\purple {\sf { \: 28 {x}^{3} + 48 {x}^{2} + 62x + 30}}}}}}$

$\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\red{:}}}}}$

$(4 {x}^{2} + 4x + 6)(7x + 5)$

$= \: 7x(4 {x}^{2} + 4x + 6) + 5(4 {x}^{2} + 4x + 6)$

$= \: 28 {x}^{3} + 28 {x}^{2} + 42x + 20 {x}^{2} + 20x + 30$

Combining like terms, we have

$= \: 28 {x}^{3} + (28 {x}^{2} + 20 {x}^{2} ) + (42x + 20x) + 30$

$= \: 28 {x}^{3} + 48 {x}^{2} + 62x + 30$

$\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{❦}}}}}$

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3 years ago