3 years ago

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1 answer:

4 0

Answer:

-15u²

Step-by-step explanation:

$-(4+11)u^{2} \\-15u^{2}$

same exponent so it can be added together

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natulia [17]

The answer is 3n because the 3 is the coefficient

7 0

3 years ago

kondaur [170]

Let, the number = x
It would be: x * 0.135 = 57
x = 57 / 0.135
x = 422.23

Hope this helps!

6 0

3 years ago

antiseptic1488 [7]

Answer:

Hope this helps!!!!!!!

3 0

4 years ago

Alex73 [517]

Answer:

$x_{1}=\frac{1+\sqrt{33} }{4}\\x_{2}=\frac{1-\sqrt{33} }{4}$

Step-by-step explanation:

Using quadratic formula

$x=\frac{-b+-\sqrt{b^{2}-4*a*c} }{2*a}$

we will have two solutions.

2x^2 - x - 4 = 0

So, a=2 b=-1 c=-4, we have:

$x_{1}=\frac{+1+\sqrt{-1^{2}-4*2*-4} }{2*2}\\\\x_{2}=\frac{+1-\sqrt{-1^{2}-4*2*-4} }{2*2}$

Finally, we have two solutions:

$x_{1}=\frac{1+\sqrt{33} }{4}\\\\x_{2}=\frac{1-\sqrt{33} }{4}$

5 0

4 years ago

nadya68 [22]

(x^2-5x-6)= (x+1)(x-6)

one of them has to be zero...

x=-1, x=6.

Hope this helps!

4 0

3 years ago