Question

Using the identify(x+a)(x+b)=x^2+(a+b)x+ab,evaluate the following: 52×47​

Answer 1

let us consider

usual method

x=50

and a=2

b=-3

(50+2)(50-3)

=50²+-1(50)+-6=

2500-56 = 2444

method 2;

let x =52

a=0

b=-5

52² +(0-5)52 +0×-5= 2704-260 =2444

• hence , by multiple value we come to know to know.. we can choose any values of X , a,b but.. squaring value (X) should be taken multiple of then 10 theb its easy to calculation .. rest of all depends on the person choice..
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Answer 2

Here you go
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