Question

10.5 x 10.5 - 15 x 10.5 +7.5 x 7.5/
10.5 - 7.5
(1) 17 (2) 3 (3) 6 (4) 22​

Answer 1

Answer:

3) 3

Step-by-step explanation

10.5×10.5-15×10.5+7.5×7.5

=(10.5)^2-2×10.5×7.5+(7.5)^2

={10.5-7.5}^2.........(1)

={3}^2=9

Now,

(10.5-7.5)=√9

(10.5-7.5)=3