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marysya [2.9K]
3 years ago
6

15 + ( -11)3 please help

Mathematics
2 answers:
sattari [20]3 years ago
4 0

Answer:

-18

Step-by-step explanation:

Multiply -11 by 3.

Add -33 to 15.

Answer -18

lora16 [44]3 years ago
3 0

Answer:

15 + (-11)3 = -18

Step-by-step explanation:

just follow the order of operations. hope it helps :)

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Subtract and simplify. Show work please!
ra1l [238]

1) Final expression: +7y^2-6y-17

2) Final expression: 21x^3-46x^2+59x-30

Step-by-step explanation:

1)

The first expression is

(-2y^2-11y-7)-(-9y^2-5y+10)

First, we remove the 2nd bracket by changing the sign of all the terms inside:

-2y^2-11y-7-+9y^2+5y-10

Now we group the terms with same degree together:

(-2y^2+9y^2)+(-11y+5y)+(-7-10)

Now we solve the expression in each brackets:

(-2y^2+9y^2)+(-11y+5y)+(-7-10)=\\+7y^2-6y-17

So, this is the final expression.

2)

The second expression is

(7x-6)(3x^2-4x+5)

We apply the distributive property, so we rewrite the expression as follows:

(7x-6)(3x^2-4x+5)=7x(3x^2-4x+5)-6(3x^2-4x+5)

Solving both brackets,

7x(3x^2-4x+5)-6(3x^2-4x+5)=\\21x^3-28x^2+35x-18x^2+24x-30

Now we group terms of same degree together:

21x^3-28x^2+35x-18x^2+24x-30=\\21x^3+(-28x^2-18x^2)+(35x+24x)-30

And solving each bracket,

21x^3+(-28x^2-18x^2)+(35x+24x)-30=\\21x^3-46x^2+59x-30

So, this is the final expression.

Learn how to simplify expressions:

brainly.com/question/7014769

brainly.com/question/11007572

brainly.com/question/11334714

#LearnwithBrainly

3 0
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alexandr1967 [171]
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6 0
3 years ago
Read 2 more answers
2 rational numbers who’s difference is rational
horrorfan [7]

Answer: (5+√2) and (3+√2)

Step-by-step explanation: Let (5+√2) and (3+√2) be  two irrational numbers

                                             Difference = (5+√2) - (3+√2)

                                             Difference = 2

                                             2 is a rational number

6 0
3 years ago
What is 8(7x-2)-x=424 ?
valina [46]
X=8 i did mental math but 56x-16-x=424
                                            +16      +16
                                              55x=440
                                               /55  /55
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3 0
3 years ago
HELP ME! @all smart people
larisa86 [58]
The first one is 5.3 you multiply 4x4 which is 16 then divide by 3 which then gives you the answer
6 0
3 years ago
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