Find the value of the given expression for the given value of the variables.
a) a2 + b2 - ab for a = 2, b = 1
b) 81 – 4x for x = 5
I want answer with full explanation for class 6
Answers
Answered by
87
a) a²+b²-ab
= 2²+1²-2.1
= 4+1-2
= 5-2
= 3
b) 81-4x
= 81-4.4
= 81-16
= 65
Answered by
0
Answer:
a) 4
b ) 61
Step-by-step explanation:
a ) a = 2 , b=1
substituting :
2x2 + 2x1 - 2x1
4 + 2 -2
ans is 4
b)
81 - 20 ( x = 5 ) ( 4x5 = 20)
61
ans is 61
.
.
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