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galben [10]
2 years ago
10

Quick please no links or anything just the straight up answer answer both please

Mathematics
2 answers:
ludmilkaskok [199]2 years ago
3 0
Hi hi hi hi hi hi hi hi The answer is D
Ivanshal [37]2 years ago
3 0
The answer is D because:

A straight angle is 180 degree. Those 2 angles MUST equal to 180. So therefore,

(x-10)+(2x+10)=180
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All of the following equations have the same solution except _____. A. 7.5x = 1.5 B. x/5 = 0.04 C. x + 6.5 = 6.3 D. -1.8 + x = -
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PLEASE ANSWER QUICKLY
Olegator [25]

Answer:

x=3

Step-by-step explanation:

Set equations equal to each other:

x^3-3x^2+2=x^2-6x+11

Subtract two from both sides

x^3-3x^2=x^2-6x+9
Factor out x^2 from the left side

x^2(x-3)=x^2-6x+9

Factor the right side, look for two factors of 9, which add to -6, which is just -3 and-3

x^2(x-3) = (x-3)(x-3)

So as you can see here, we have both sides in factored form, and both have a factor of (x-3) on both sides, and if one of the factors is zero, then the entire thing becomes zero, since 0 * anything= zero.

this means a solution would be at x=3, since it makes the right side 0 * 0 = 0, and the left side (3)^2 * 0 = 0

It's important to notice this, since had we divided by x-3 to make the equation a quadratic, we would've excluded this real solution, because when dividing by x-3 the solution x=3 makes it 0, so we would've been dividing by zero.

So one of the real solutions is at x=3

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