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vazorg [7]
2 years ago
15

How can I factorise expressions

Mathematics
1 answer:
expeople1 [14]2 years ago
7 0

Answer:

The first step of factorising an expression is to 'take out' any common factors which the terms have. So if you were asked to factorise x² + x, since x goes into both terms, you would write x(x + 1) . This video shows you how to solve a quadratic equation by factoring.

Step-by-step explanation:

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What are the coordinates A’ after 90 counterclockwise rotation about the origin.
vampirchik [111]

Answer:

the above is the answer

hope this is helpful

3 0
3 years ago
Point A is the midpoint of side XZ and point B is the midpoint of side YZ. Triangle X Y Z is cut by line segment A B. Point A is
AveGali [126]

Answer:

<h3>B. 4units</h3>

Step-by-step explanation:

Find the diagram attached. The diagram is a similar triangle.

From the diagram, XZ/XY = CA/AB

Given XZ = 2x-2+2x-2 = 4x-4

XY =5x-7

CA = 2x-2

AB= x+1

On substituting this parameters into the formula to get x first

4x-4/5x-7 = 2x-2/x+1

cross multiply

(4x-4)(x+1) = 5x-7(2x-2)

open the parenthesis

4x²+4x-4x-4 = 10x²-10x-14x+14

4x²-4 = 10x²-24x+14

10x²-4x²-24x+14+4 = 0

6x²-24x+18 = 0

x²-4x+3 = 0

x²-3x-x+3 = 0

x(x-3)-1(x-3)  =0

(x-3)(x-1) = 0

x = 3 and 1

Next is to get length AX.

Given AX = 2x-2

Substitute x = 3 into the expression

AX = 2(3)-2

AX = 6-2

AX = 4 units

Hence the measure of length AX is 4 units

4 0
3 years ago
2. Shawn has to pay 5% sales tax on his $500 purchase. How much tax will<br> Shawn pay?
Charra [1.4K]

Answer:

$25

Step-by-step explanation:

.05x500=25

hope this helps

4 0
3 years ago
Read 2 more answers
The area of a square is 121 square feet. What is the perimeter of the square
Ugo [173]

Answer:

44 feet

Step-by-step explanation:

square root of 121 is 11

so each side of the square is 11

11 x 4 = 44

6 0
3 years ago
Simplify: StartRoot 324 EndRoot 1. Write the prime factorization of the radicand. StartRoot 324 EndRoot = StartRoot 2 times 2 ti
Savatey [412]

Answer:

  18

Step-by-step explanation:

To continue where you left off, ...

  \sqrt{2^2}\times\sqrt{3^2}\times\sqrt{3^2}=2\times 3\times 3=18

The square root of 324 is 18.

3 0
3 years ago
Read 2 more answers
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