Question

factorise completely (x plus 2) Square - (x - 4) Square and hence find then value of 1000 Square minus 992 Square​

Answer 1

`x^2+3x+8`

`15936`

Explanation:

`\left(x+2\right)^2-\left(x-4\right)`

`\left(x+2\right)\left(x+2\right)-\left(x-4\right)`

`x^2+2x+2x+4-(x-4)`

`x^2+4x+4-\left(x-4\right)`

`x^2+4x+4-x+4`

`x^2+3x+8`

`1000^2-992^2`

`1000000-984064`

`15936`