Ask question

Ask question

All categories

2 years ago

10

Solve the equation. Simplify all irrational solutions. x^2-9x

1 answer:

salantis [7]2 years ago

6 0

Answer:

x(x−9)

Step-by-step explanation:

x2−9x

=x(x−9)

You might be interested in

Which of these numbers are divisible by both 5 and 10? .....a )943 720 b) 345 c) 57 382 d) 8880

alexgriva [62]

D, 8880 is divisible by both ten and 5.

4 0

3 years ago

X squared+ y squared = 2 y = 2x squared – 3 Which of the following describes the system?

cluponka [151]

Answer:

$x=-1,1,-\sqrt{\frac{7}{4} },\sqrt{\frac{7}{4}}$ and $y=-1,\frac{1}{2}$

The ordered pair solutions are $(-\sqrt{\frac{7}{4}},0.5)$ , $(\sqrt{\frac{7}{4}},0.5)$ , $(-1,-1)$ , and $(1,-1)$ .

Step-by-step explanation:

I'm assuming the system is $\left \{ {x^2+y^2=2} \atop {y=2x^2-3}} \right.$ :

$x^2+y^2=2$

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

$x^2+(4x^4-12x^2+9)=2$

$x^2+4x^4-12x^2+9=2$

$4x^4-11x^2+9=2$

$4x^4-11x^2+7=0$

$x^4-11x^2+28=0$

$(x^2-7)(x^2-4)=0$

$(4x^2-7)(x^2-1)=0$

$4x^2-7=0$

$4x^2=7$

$x^2=\frac{7}{4}$

$x=\pm\sqrt{\frac{7}{4}}$

$x^2-1=0$

$x^2=1$

$x=\pm1$

$y=2x^2-3$

$y=2(\pm\sqrt{\frac{7}{4}})^2-3$

$y=2({\frac{7}{4}})-3$

$y=\frac{7}{2}-3$

$y=\frac{1}{2}$

$y=2x^2-3$

$y=2(\pm1)^2-3$

$y=2(1)-3$

$y=2-3$

$y=-1$

Therefore, $x=-1,1,-\sqrt{\frac{7}{4} },\sqrt{\frac{7}{4}}$ and $y=-1,\frac{1}{2}$

The ordered pair solutions are $(-\sqrt{\frac{7}{4}},0.5)$ , $(\sqrt{\frac{7}{4}},0.5)$ , $(-1,-1)$ , and $(1,-1)$ .

4 0

2 years ago

Solve vertex form out <br> О=x^2 -4x -12

pochemuha

Answer: (2,-16)

Step-by-step explanation: you have to rewrite it by using the vertex form (h,k)

3 0

2 years ago

The butter distributor charges $4.50 per pound, but there is a handling fee of $8.50 per order. Free shipping for orders between

kykrilka [37]

Answer:

14.00

Step-by-step explanation:

add

subtract

divide

multiple

4 0

2 years ago

Mark is baking cookies he needs 2/3 cup of flour for each batch of cookies if each batch represents 1/4 of the total numbers of

Lera25 [3.4K]

Answer: 2 2/3 cups of flour

Step-by-step explanation: If one batch represents 1/4 of the total number of cookies he needs, then it can be deduced that he needs four total batches. If it requires 2/3 cups of flour for each batch and he needs 4 batches, you would multiply 2/3 by 4 to get the answer.

2/3 × 4 = 2 2/3

3 0

3 years ago