Question

A rectangle has a length (x+3)cm and a width (x-1)cm . Given that the rectangle is 24 cm^2. Find the value of x

Answer 1

4.292

Explanation:

(x+3)(x-1)=24

expand

x²+2x-3=24

x²+2x-27=0

Using the quadratic formula..

`(-2+√(2^2-4*1*-27))/(2)=(-2+10.5830052443)/(2)=4.292`

there is another answer, but it doesn't make sense in the context of this question

the un-rounded answer is 4.29150262215