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fenix001 [56]
3 years ago
10

Factorise 7x² + 14xy - 21xyz (SHOW STEPS)

Mathematics
1 answer:
Sunny_sXe [5.5K]3 years ago
7 0

Answer:

7x(x+2y-3yz)

Step-by-step explanation:

First we find the greatest common factor of the coefficients, 7, 14 and 21.

The greatest common factor is 7.

Factor 7 out and divide the terms by 7:

7x^2+14xy-21xyz=7(x^2+2xy-3xyz)

-----------------------------------------------------

Next, we find the greatest common factor of x^2,xy and xyz.

The greatest common factor is x.

Factor x out and divide the terms by x:

7(x^2+2xy-3xyz)=7x(x+2y-3yz)

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Which values are solutions to x > 7?​
zhenek [66]

Answer:

<h3>           A. x = 8 and x = 11. </h3>

Step-by-step explanation:

which values are solutions to x > 7?

A. x = 8 and x = 11.

B. x = 8 and x = 0.

C. x = 0 and x = 8.

D. x= 11 and x = 1

x > 7    

0 < 7   that excludes B. and C.

1 < 7   that excludes D.

8 > 7 and 11 > 7, so the answer A. is correct

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3 years ago
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Answer:

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2 years ago
Mrs. Groen estimates that she will spend $120 at the grocery store. She actually spends $150. What is the percent error?
yawa3891 [41]

Answer:

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Step-by-step explanation:

6 0
3 years ago
Hi does anyone know what m+20=6, please show work with it
erik [133]
So your equation is m + 20 = 6

The first think you do is subtract 20 from both sides in order to get “m” alone, since that’s the variable you’re solving for. So what you’ll you have next is
m + 20 - 20 = 6-20

Since 20 subtracted by itself is zero, you’ll be left with
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Or more simply

m = -14
8 0
3 years ago
How to solve 105x2 +66x - 72 = 0 algebraically. Show work please
trapecia [35]

Answer:

Do pemdas, (parentheses, exponents, multiplication, division, addition and subtraction). But do whatever is first, which in this case is multiplication.

Step-by-step explanation:

Write the equation out.

    105 x 2 + 66x -72 = ?

    105 x 2 = 210

     210 + 66x - 72

    210 + 66x = 276x

     276x - 72 = 204

      ? = 204

5 0
3 years ago
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