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3 years ago

Factorise (x+3)(x+3)

Mathematics

2 answers:

Luda [366]3 years ago

6 0

Step-by-step explanation:

( x + 3 ) ²

.........

hope it helps!

igomit [66]3 years ago

4 0

Answer:

it's already factorized, you can't go any further

if u mean the answer when both is multiplies then it's x^2 + 6 + 9

Step-by-step explanation:

(x + 3)(x + 3)

use distributive property

x^2 + 3x + 3x + 9

x^2 + 6x + 9

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Radius = 3 inches

So, $\dfrac{r}{h}=\dfrac{3}{9}=\dfrac{1}{3}\\\\r=\dfrac{1}{3}h$

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$V=\dfrac{1}{3}\pi r^2h\\\\V=\dfrac{1}{3}\pi \dfrac{1}{9}h^2\times h\\\\V=\dfrac{1}{27}\pi h^3$

By differentiating with respect to time t, we get that

$\dfrac{dv}{dt}=\dfrac{1}{27}\pi \times 3\times h^2\dfrac{dh}{dt}=\dfrac{1}{9}\pi h^2\dfrac{dh}{dt}$

Now, the liquid drips out the bottom of the filter at the constant rate of 4 cubic inches per second, ie $\dfrac{dv}{dt}=-4\ in^3$

and h = 2 inches deep.

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