3 years ago

Solve the equation 7x+12=x−6 to find the number, x . x= __

Mathematics

2 answers:

Yanka [14]3 years ago

6 0

X equals -3 i’m adding more characters because it’s not 20 but it’s -3

never [62]3 years ago

5 0

Answer: -3

Step-by-step explanation:

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romanna [79]

Answer: Efficiency metrics

Step-by-step explanation:

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4 0

4 years ago

Can somebody explain this to me when 2du = 16xdx ???

tamaranim1 [39]

When you set $u=4x^2+4$ , you end up with the differentials $\mathrm du=8x\,\mathrm dx$ . Multiplying both sides by 2 gives $2\,\mathrm du=16x\,\mathrm dx$ .

Then the integral is

$\displaystyle\int_0^1\frac{16x}{(4x^2+4)^2}\,\mathrm dx=\int_4^8\frac2{u^2}\,\mathrm du=-\frac2u\bigg|_{u=4}^{u=8}=-2\left(\frac18-\frac14\right)=\frac14$