Question

a + b = 1, a minus b = 7 .Find the value of 5(a square + b square)​

Answer 1

Step-by-step explanation:

35

Hope it helps you good luck

Answer 2

Given :-

a + b = 1

a - b = 7

To Find :-

5(a² + b²)

Solution :-

In 1

a + b = 1

a = 1 - b

a - b = 7

1 - b - b = 7

1 - 2b = 7

-2b = 7 - 1

-2b = 6

b = 6/-2

b = -3

Using 1

a + b = 1

a + -3 = 1

a = 1 - (-3)

a = 4

5(4² + -3²)

5(16 + 9)

5(25)

125