Question

the length of the rectangle is 2 x + 5 unit and breadth is equal to 2 x minus 5 units find its area in term of X what will be the area if x is equal to 10​

Answer 1

Answer:

(4x^2 - 25)     at x = 10      it is 375

Step-by-step explanation:

area = length x breadth

        (2x+5) x (2x-5)

       on simplify it gives 4x^2 - 25

       

then put x=10

400 - 25 = 375

I hope it helps

Answer 2

area of rect.= l×b=(2x+5)(2x-5) 4x^2-25 if x=10 then area of rect.=4 (100)-25=400-25 =375units