Question

Without acctually finding out the values of c and d , find 4cd(c²+d²) , given c+d=11 , c-d=1​

Answer 1

Step-by-step explanation:

Heya !!

Given :-

• c + d = 11
• c - d = 1

To Find :-

• finding out the values of c and d , find 4cd(c²+d²)

Solution :-

• d = 11 - c .......equ ( 1 )
• c = 1 + d .......equ ( 2 )

According to the equation

c = 1 + 11 - c

2c = 12

c = 6

According to the given c - d = 1

c - d = 1

6 - d = 1

- d = 1-6

d = 5

Equation 4cd(c²+d²)

= 4×6×5(6^2+5^2)

= 120×61

= 7320

Hence the the answer is 7320

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