Question

Are these two expressions equal? (q-r)^2 and q^2-r^2?????

Answer 1

Yes, they are.

Explanation:

`(q - r) {}^(2) =( q) {}^(2) - (r) {}^(2) = q {}^(2) - r {}^(2)`

`(q - r) {}^(2) = q {}^(2) - r {}^(2)`

Hope this helps ;) ❤❤❤

Answer 2

`\boxed{\sf No}`

Explanation:

`(q-r)^2`

Expand brackets.

`(q-r)(q-r)`

`q^2 -rq -rq+r^2`

Combine like terms.

`q^2 -2rq+r^2`

The expression is not equal to
`q^2 -r^2`.