3 years ago

Please help im doing the dionasged

Mathematics

1 answer:

alekssr [168]3 years ago

3 0

I think the second option is right

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Tìm x a) (x+3)²+(x-2)²=2x²

natta225 [31]

The answer is 7 because x+3 is 10. Hope this helped

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2 years ago

Solve, show all four steps.

Eva8 [605]

3x-6+10x+15=35
10x+3x=35-15+6
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3 years ago

Please help with my IXL, thanks!

3241004551 [841]

Answer:

48%

Step-by-step explanation:

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2 years ago

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Which of the following is the result of the equation below after completing the square and factoring?

Tems11 [23]

Answer:

D) $(x + \frac{5}{2})^{2} = \frac{9}{4}$

Step-by-step explanation:

Step(i):-

Given equation

x² + 5 x + 8 = 4

⇒ $x^{2} + 2 X \frac{5}{2} x + (\frac{5}{2} )^{2} - (\frac{5}{2} )^{2}+ 8 = 4$

Step(ii):-

By using (a + b)² = a² + 2 a b + b²

⇒ $(x + \frac{5}{2})^{2} - (\frac{5}{2} )^{2}+ 8 = 4$

⇒ $(x + \frac{5}{2})^{2} = 4 + (\frac{5}{2} )^{2} -8$

⇒ $(x + \frac{5}{2})^{2} = (\frac{25}{4} ) -4$

⇒ $(x + \frac{5}{2})^{2} = (\frac{25-16}{4} )$

⇒ $(x + \frac{5}{2})^{2} = \frac{9}{4}$

Final answer:-

$(x + \frac{5}{2})^{2} = \frac{9}{4}$

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3 years ago

Evaluate -3x³-4x for x=-1

anyanavicka [17]

Answer:

Step-by-step explanation:

Sub -1 in for each x:

-3x³-4x

-3(-1)³-4(-1)

-3(-1)+4

3+4

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3 years ago

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