Question

plz provide me the ans​

Answer 1

Answer:

x^3+y^3 = 91.

hope this answer is helps you.

Answer 2

x + y = 7

y = 7 - x

Now x^2 + y^2 = x^2 + ( 7- x)^2

x^2 + 49+ x^2 - 14x

= 2x^2 - 14x + 49

According to the question =

2x^2 - 14x + 49 = 25

2x^2 - 14x = - 24

2x^2 - 14x + 24 = 0

x^2 - 7x + 12 = 0

x^ 2 - 4x - 3x + 12 = 0

x( x - 4) - 3(x - 4) = 0

( x - 4) ( x - 3) = 0

X - 4 = 0

x = 4

Or

x - 3 = 0

x = 3

take the value of x either 4 or 3, let's take 4

There it is given, x + y = 7

4+y = 7

y= 3

x^3 + y^3 = 4^3 + 3^3 = 64 + 27 = 91

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