Question

(4.9) square find using a-b ka whole square​

Answer 1

Answer:

(4.9)2

Step-by-step explanation:

(a-b)=a2-2ab+b2

(5-0.1)=5*5-2*5*0.1+0.1*0.1

=25-1.01

=23.99

Answer 2

(a-b)^2=(5-0.1)^2

=(5)^2 + (0.1)^2 - 2*(5)*(0.1)

=25 + 0.01 - 1

=24.01