All categories

2 years ago

How to do factor each expression 63 + 81

Mathematics

1 answer:

Katyanochek1 [597]2 years ago

6 0

Answer:

$9(7 + 9)$

Step-by-step explanation:

To factor an expression you have to first find the highest common factor (HCF) of the numbers in the expression. You divide them by their HCF, bracket it and place the HCF outside the bracket.

$63 + 81 = \\ 9(\frac{63}{9} + \frac{81}{9}) = \\ 9(7 + 9)$

To check if it is factored properly you can do the opposite of what you just did by clearing the bracket.

9 (7 + 9)

(9 x 7) + (9 x 9)

= 63 + 81

You might be interested in

The area of a triangle is 30cm and its base is 10cm. What is the height, in cm, of the triangle

Westkost [7]

Answer: 6cm

Step-by-step explanation:

Area of a triangle is 1/2bh

B= base

H= height

Area = 30cm

Substitute the values into the formula

Area= 1/2bh

30=1/2×10×h

30=5h

H=30/5

H= 6cm

Height of the triangle is 6cm

7 0

4 years ago

Read 2 more answers

Solve the system of linear equations by substitution

Elodia [21]

X= 5y + 1

-2x + 9y = -1

-2(5y + 1) + 9y = -1

-10y - 2 + 9y = -1

-y - 2 = -1

-y = 1

y = -1

x + 5 = 1

x = -4

(-4, -1)

8 0

3 years ago

Simplify: (8t4 + 6 )+(914 – 2ť + 6t? – 6 )

vekshin1

Answer:t

2⋅(17t 2 −2t+6)

Step-by-step explanation:

v(8•(t4))+6)+((((9•(t4))-(2•(t3)))+(2•3t2))-6)

STEP

Equation at the end of step

((8•(t4))+6)+((((9•(t4))-2t3)+(2•3t2))-6)

STEP

Equation at the end of step

((8•(t4))+6)+(((32t4-2t3)+(2•3t2))-6)

STEP

Equation at the end of step

(23t4 + 6) + (9t4 - 2t3 + 6t2 - 6)

STEP

Pulling out like terms

6.1 Pull out like factors :

17t4 - 2t3 + 6t2 = t2 • (17t2 - 2t + 6)

(8•(t4))+6)+((((9•(t4))-(2•(t3)))+(2•3t2))-6)

STEP

Equation at the end of step

((8•(t4))+6)+((((9•(t4))-2t3)+(2•3t2))-6)

STEP

Equation at the end of step

((8•(t4))+6)+(((32t4-2t3)+(2•3t2))-6)

STEP

Equation at the end of step

(23t4 + 6) + (9t4 - 2t3 + 6t2 - 6)

STEP

Pulling out like terms

6.1 Pull out like factors :

17t4 - 2t3 + 6t2 = t2 • (17t2 - 2t + 6)

(8•(t4))+6)+((((9•(t4))-(2•(t3)))+(2•3t2))-6)

STEP

Equation at the end of step

((8•(t4))+6)+((((9•(t4))-2t3)+(2•3t2))-6)

STEP

Equation at the end of step

((8•(t4))+6)+(((32t4-2t3)+(2•3t2))-6)

STEP

Equation at the end of step

(23t4 + 6) + (9t4 - 2t3 + 6t2 - 6)

STEP

Pulling out like terms

6.1 Pull out like factors :

17t4 - 2t3 + 6t2 = t2 • (17t2 - 2t + 6)

5 0

3 years ago

Order each set of integers from least to greatest; -55, 143, 18, -79, 44, 101

pickupchik [31]

-79, -55, 18, 44, 101, 143

3 0

3 years ago

Read 2 more answers

A thunderstorm travels at a constant speed. In 15 minutes , the storm travels 12 miles. If the storm continues to travel at the

Kitty [74]

You need to multiply

5 0

3 years ago