Question

what is identity
brief explanation
no coping from websites or google
Examples with no attachment ​

Answer 1

Answer:

These identities are obtained by multiplying a binomial by another binomial.

Step-by-step explanation:

Let us now consider ,

$(a + b)(a + b) \: or \: (a + b) {}^{2}$

Solution:-

$(a + b) {}^{2} = (a + b)(a + b) \\ = a(a + b)(a + b) \\ = a {}^{2} + ab + ab + b {}^{2} \\ = a {}^{2} + 2ab + b {}^{2} (since ... \: ab = ba)$

$(a + b) {}^{2} = a {}^{2} + 2ab + b {}^{2}... (1)$

This identity, since the expression on RHS is obtained from the LHS by actual multiplication ,Only may verfiy for any value a and any of b, the values of the two sides are equal.

Answer 2

An equation that is true no matter what values are chosen.

Example: a/2 = a × 0.5 is true, no matter what value is chosen for "a"

Hope helps