Question

factorise 100 b square - 81​

Answer 1

Answer:

value of b is 9/10 or -9/10

by using identity

(a^2 - b^2)=(a+b) (a-b)

Answer 2

Step-by-step explanation:

100b^2-81=100 b square=81

b square =81/100

b=\sqrt {81 \100}

b=8/10

because square root of 81 is 9 and 100 is 10