2 years ago

What number must you add to complete the square x^2 + 12x = -3

1 answer:

4 0

12 /2=6 then 6 squared =36

Add 36 to both sides

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notsponge [240]

She completed 3/4 of her homework

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3 years ago

belka [17]

False
-3 is not greater than positive 3

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2 years ago

r-ruslan [8.4K]

-5 + x/22 = -1

+ 5 for both side

x
--- = 4
22

multiply by 4

x = 22(4)

x = 88

5 0

2 years ago

posledela

Answer:

$14\sqrt{3}-8\sqrt{5}$

Step-by-step explanation:

we have

$2\sqrt{20}-4\sqrt{45}+7\sqrt{12}$

we know that

$2\sqrt{20}=2\sqrt{2^{2}5} =2(2)\sqrt{5}=4\sqrt{5}$

$4\sqrt{45}=4\sqrt{3^{2}5} =4(3)\sqrt{5}=12\sqrt{5}$

$7\sqrt{12}=7\sqrt{2^{2}3} =7(2)\sqrt{3}=14\sqrt{3}$

substitute the values in the expression above

$4\sqrt{5}-12\sqrt{5}+14\sqrt{3}$

Combine like terms

$14\sqrt{3}-8\sqrt{5}$

8 0

2 years ago

kirza4 [7]

Anything from 269, 268, 267, 266, and 265 but you’ll want 269

6 0

3 years ago