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Serhud [2]
3 years ago
13

If xy=5 and x square +y square =25 ,then (x+y)square ​

Mathematics
2 answers:
nika2105 [10]3 years ago
8 0

Answer:

(x + y)² = 35

Step-by-step explanation:

The expansion of

(x + y)² = x² + 2xy + y²

           = x² + y² + 2xy ← substitute given values

          = 25 + 2(5)

           = 25 + 10

           = 35

Salsk061 [2.6K]3 years ago
4 0

Answer:

35

Step-by-step explanation:

xy = 5 \\  \\  {x}^{2}  +  {y}^{2}  = 25 \\  \\  \because  \:  {(x + y)}^{2}  =  {x}^{2}  +  {y}^{2}  + 2xy\\  \\    \therefore {(x + y)}^{2}  =  25 + 2 \times 5 \\  \\ \therefore {(x + y)}^{2}  =  25 + 10 \\  \\  \huge \red{ \boxed{\therefore {(x + y)}^{2}  =  35}}

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Can u plz help me on this plz.
k0ka [10]

Answer:

yah just give me the question???

7 0
2 years ago
What’s an equivalent expression to 5(2x-1)
netineya [11]

Answer:

10x-5

Step-by-step explanation:

Because u can simplify the equation into a shorter one by simplifying the numbers in paranthesis with 5 and 5 times 2 equal 10 as 5 times 1 equal 5

6 0
2 years ago
Is -2(3x-7) equivalent to 19+12x-5-6x? YES or NO???
nadezda [96]

Answer:





6. 6x-21=33+9x 7. -15x=-5(3x+7) 8. 16x-19=113-6x 9. -19x-34=56-x 10. -6(4x+3)=6(4x-3)?

6. 6x-21 = 33 +9x

+21 + 21

6x = 54 + 9x

-9x -9x

-3x = 54

/3 /3

x = -18

7. -15x = -5(3x+7)

First multiply the -5 to the other numbers.

-15x = -15x - 35

0x = -35

7 is impossible I believe.

8. 16x-19 = 113-6x

+6 +6

22x - 19 = 113

+ 19 +19

22x = 132

/22 /22

x = 6

9. -19x - 34 = 56 - x

+19x +19x

-34 = 56 + 18x

-56 -56

-90 = 18x

/18 /18

x = -5

10. -6(4x+3) = 6[4x-3]

-24x - 18 = 24x - 18

+18 +18

-24x= 24x

x = 0, since only zero can make the equation true.

7 0
3 years ago
Two less than the product of 9 and a number is equal to 4.
Llana [10]

Answer:

See, that doesn't make sense.

First of all, 4 is the only number equal to 4. Sp, it'd be 9+4 = 13

Then I'm assuming you're also subtracting 4 from 13, so the answer would be 9.

Hope this helped, have a nice day.

7 0
2 years ago
Help me
aivan3 [116]

Answer:

C

Step-by-step explanation:

It is the only answer where the negative signs do not even out on both sides of the equation.

7 0
3 years ago
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