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qwelly [4]
3 years ago
6

3. Multiply the polynomials (a^2 + 3a – 4) and (2a^2 – a + 5). Simplify the answer. Show your work.

Mathematics
1 answer:
Elza [17]3 years ago
8 0

Answer:

2a^4+5a^3-6a^2+19a-20

Step-by-step explanation:

(a^2+3a-4)(2a^2-a+5)

2a^4-a^3+5a^2+6a^3-3a^2+15a-8a^2+4a-20

2a^4-a^3+6a^3+5a^2-3a^2-8a^2+15a+4a-20

2a^4+5a^3+2a^2-8a^2+19a-20

2a^4+5a^3-6a^2+19a-20

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What is the volume of a rectangular prism with a length of 7m, a hight of 9m and a width of 11m
vazorg [7]
Hello!

To find the Volume of the Rectangular Prism, you'll need to multiply all of the measurements together. So you'll need to multiply 7, 9, and 11 together.

V=7*9*11

First, you'll need to multiply 7 and 9. Once you've multiplied 9 and 7 together, you should have 63. Now you should multiply 63 and 11 together. Once you've multiplied 63 and 11 together, you should have a Volume of 693

You should have a Volume of 693m³

I hope this helps!
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3 years ago
Given a mortgage of 48,000 for 15 years with a rate if 11%, what are the total finance charges
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Brainly is good and educational for me.
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2 years ago
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Help please!!!! Asap!! math whizzes!!!
Katyanochek1 [597]

Answer:

5xy^3 \sqrt{3x}

Step-by-step explanation:

The radical \sqrt{75x^3y^6} can be simplified by breaking it down into factors and removing the perfect squares from inside the radical.

\sqrt{75x^3y^6} =\sqrt{3*25*x^2*x*y^6} =5xy^3 \sqrt{3x}

25 is a perfect square and is 5 outside the radical.

x^2 is a perfect square and is x outside the radical.

y^6 is a perfect square and is y^3 outside the radical.

7 0
2 years ago
12а + 7x - За – 2х what's the answer<br>​
Troyanec [42]
9a-5x

step by step explanation:

you can only add and subtract numbers that have the same variables.

12a and 3a are related because there variable is both a.

when u subtract 12a-3a you get the answer of 9a using subtraction.

7x and -2x are the second pair of related terms because they also have the same variable (x)

7x-2x is 5x using subtraction.

put the expression together:

9a-5x

hope this helps!

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8 0
2 years ago
3x+2y-5z=-1<br> 4x-3y+2z=-13<br> 2x-5y+4z=-9
Lina20 [59]

34252

I just guessed but here

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2 years ago
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