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Aneli [31]
4 years ago
14

Simplify (2 {sqrt 5}+ 3 {sqrt 7})^2. Show your work. Justify each step.

Mathematics
1 answer:
White raven [17]4 years ago
4 0
(2√5 + 3(√7))^2
(2√5 + 3(√7))(2√5 + 3(√7))
4*5 + 6√35 + 6√35 + 9*7
20 + 12√35 + 63
20 + 63 + 12√35
83 + 12√35
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Please help me. It would mean a lot​
masya89 [10]

Answer:

8+2x and 3(x+4)-(4+x)

Step-by-step explanation:

2(x+4)=2x+8 interchanged to 8+2x

3(x+4)-(4+x) simplified to

3x+12-4-x collect like terms together 3x-x+12-4=2x+8

3 0
3 years ago
A scale factor can never by greater than 1.<br> True<br> False
mr Goodwill [35]
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4 0
3 years ago
20 points! Simplify: 2y(2y+3yx^{2} )-y^{2} (3-y) please show work!
arlik [135]

Answer:

8x2y - 6x2 - 8xy2 - y2

Step-by-step explanation:

Equation at the end of step  1  :

 (((((5•(x2))•y)-(5•(x2)))+(3y•(x2)))-(3•(y2)))-((((x2)+(y2))+(8x•(y2)))-3y2)

Step  2  :

Equation at the end of step  2  :

 (((((5•(x2))•y)-(5•(x2)))+(3y•(x2)))-(3•(y2)))-((((x2)+(y2))+23xy2)-3y2)

Step  3  :

Equation at the end of step  3  :

 (((((5•(x2))•y)-(5•(x2)))+(3y•(x2)))-3y2)-(x2+8xy2-2y2)

Step  4  :

Equation at the end of step  4  :

 (((((5•(x2))•y)-(5•(x2)))+3x2y)-3y2)-(x2+8xy2-2y2)

Step  5  :

Equation at the end of step  5  :

 (((((5•(x2))•y)-5x2)+3x2y)-3y2)-(x2+8xy2-2y2)

Step  6  :

Equation at the end of step  6  :

 ((((5x2•y)-5x2)+3x2y)-3y2)-(x2+8xy2-2y2)

Step  7  :

Final result :

 8x2y - 6x2 - 8xy2 - y2

4 0
3 years ago
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Ray Of Light [21]

Answer: perpendicular

Step-by-step explanation:

8 0
3 years ago
the number of girls on the school's basketball team decreased by 20% this year. if there were 25 girls on the team last year. ho
Harman [31]

Answer:

Step-by-step explanation:

okay so to get 10% of 20 you just move the decimal to the right one so 25.0 would become 2.5 then to find 20% of that you multiply by 2 so 2.5 x 2 = 5 so that means the team lost 5 girls. 25-5=20 therefor there are 20 players on the team this year

4 0
3 years ago
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