3 years ago

Factorise Fully x^2 + x

Mathematics

1 answer:

balu736 [363]3 years ago

5 0

Answer:

X(x+1)

Step-by-step explanation:

If it is wrong I'm sorry.

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Water stations will be placed every 400 meters of a 5 - kilometer race. How many water stations are needed? (hint 1 kilo=1,000 m

Neko [114]

1 kilo=1000 meters.
The race is 5,000 meters total.
5000 divided by 1 station every 400 miles.
5000/400=12.5
12.5 water stations!
<em />I dont know if you're supposed to round but there you go!

8 0

4 years ago

What is the answer to x2+4x +3 =0?

adell [148]

(x+1) (x+3)
the zeroes of the function are negative 1 and negative 3

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3 years ago

Please solve for x will mark brainliest answer

inna [77]

Answer:

x ≥ - 8

Step-by-step explanation:

Given

$\frac{x}{2}$ ≥ - 4

Multiply both sides by 2 to eliminate the fraction

x ≥ - 8

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3 years ago

Read 2 more answers

In a shipment of new books for a library 3/12 of the books were poetry and 2/5 of the books were biographies . The remainder of

Pepsi [2]

Answer:

Step-by-step explanation:

2/5x3/12=6/36

6 0

3 years ago

How do u factor this

PilotLPTM [1.2K]

You can factor a parabola by finding its roots: if

$p(x)=x^2+bx+c$

has roots $x_1,\ x_2$ , then you have the following factorization:

$p(x) = (x-x_1)(x-x_2)$

In order to find the roots, you can use the usual formula

$x_{1,2} = \dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

In the first example, this formula leads to

$x_{1,2} = \dfrac{-2\pm\sqrt{4+4}}{2} = \dfrac{-2\pm\sqrt{8}}{2} = \dfrac{-2\pm2\sqrt{2}}{2} = 1 \pm \sqrt{2}$

So, you can factor

$x^2-2x-1 = (x-1-\sqrt{2})(x-1+\sqrt{2})$

The same goes for the second parabola.

As for the third exercise, simply plug the values asking

$f(1.5)=-5.25$

you get

$f(-1.5) = 1.5c-3 = -5.25$

Add 3 to both sides:

$1.5c = -2.25$

Divide both sides by 1.5:

$c = 1.5$

7 0

3 years ago