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BaLLatris [955]
3 years ago
12

Directions: Simplify each algebraic expression by combining like terms.

Mathematics
1 answer:
Rufina [12.5K]3 years ago
8 0

Answer:

Step-by-step explanation:

1) 7x^2-5x+10x-8x=7x^2+5x-8x=7x^2-3x

2) -6a^3+5a^3+2a-a=-a^3+2a-a=-a^3+a

3) -4(x+5)-5(x-1)=-4x-20-5x+5=-9x-20+5=-9x-15

4) -a+5b-6a+5(a+1)=-7a+5b+5a+5=-2a+5b+5

5) 18x^4-3x^3-2x^3+x^2-10+6

=18x^4-5x^3+x^2-4

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Tell whether (-8,2) is a solution of -x-6y>12
Dennis_Churaev [7]

Answer:

it ain't

Step-by-step explanation:

x = -8

y = 2

-(-8) - 2(6) > 12

8 - 12 > 12

-4 > 12

This is incorrect

6 0
3 years ago
A union negotiates for a cost of living raise of 7%. What is the raise for a union member whose salary is $40,240? What is this
Zolol [24]

$2816.80 is the raise

21 is 30% of 70

7 0
3 years ago
Can I get some help on how to solve this?
Klio2033 [76]

Answer:

see explanation

Step-by-step explanation:

Factorise both denominators

x² + 2x = x(x + 2) ← common factor of x

x² - 4 = (x - 2)(x + 2) ← difference of squares

Before subtracting we require common denominators

Multiply the numerator/denominator of the first fraction by (x - 2)

Multiply the numerator of the second fraction by x

= \frac{5}{x(x-2)(x+2)} - \frac{2x}{x(x-2)(x+2)}

Distribute and simplify the numerator leaving the denominator

= \frac{5x-10-2x}{x(x-2)(x+2)}

= \frac{3x-10}{x(x-2)(x+2)}

3 0
3 years ago
Please help!!! What is 10-2(3-2x=0)
Mkey [24]
Use the distributive property
10-6-4x=0
4-4x=0
3 0
3 years ago
Can u pls help me with this question ​
zvonat [6]

Answer:

AVA

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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