Question

4(a + b)2 - 20(a + b) + 26, when a = 2, b = 1
1​

Answer 1

Step-by-step explanation:

a+b=6 ———-equation 1

a-b=4 ———-equation 2

adding both the equations,

a+b+a-b=6+4

2a=10

a=5//

Substitute a’s value in equation 1,

5+b=6

b=1//

Hence,

a²+b² = 5² + 1²

=25 + 1

26=

Answer 2

Answer:

26 is your answer

Step-by-step explanation:

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