How can you find `(x-y)^(3)` without actual multiplication?
Verify with actual multiplication.

Find the multiplicative inverse of -i .

How can you find the age of fossiles ?

Find the multiplicative inverse of 4-3i .

Find the multiplicative inverse of 2-3i.

Find the proudct (a-b-c) (a ^(2) + b ^(2) + c ^(2) - ab + bc-ca) without actual multiplication.

Evaluate the following products without actual multiplication. (i) 101 xx 99 (ii) 999 xx99 (iii) 50 (1)/(2) xx 49 (1)/(2) (iii) 501 xx 501 (iv) 30.5 xx 29.5

What do you mean by multiplication of a vector by a real number ?

Verify (i) x ^(3) + y ^(3) = (x + y) (x ^(2) -xy + y ^(2)) (ii) x ^(3) -y ^(3) = (x-y) (x ^(2) +xy +y ^(2)) using some non-zone positive integers and check by actual multiplication. Can you call these as identities ?

If (cos^2x+1/(cos^2x)) (1+tan^2 2y)(3+sin3z)=4, then x is an integral multiple of pi x cannot be an even multiple of pi z is an integral multiple of pi y is an integral multiple of pi/2