Polynomials Tes...

Which of the following is correct?

Find the value of $$49^2$$ using standard identity.

Square of $$3a-4b$$ is:

Find the value of $$1.05\times 0.95$$ using standard identity.

Find the value of $$47\times 53$$.

Find the value of $$87^2-13^2$$.

Find the value of $$199\times 201$$.

Find the value of $$52^2$$ using standard identity.

Find the value of $$1.03^2$$ using identity.

Find the value of $$(a-b)(a+b)+(b-c)(b+c)+(c-a)(c+a)$$.