Question

7. Find the area of a rectangle if has a length the size of (x - 7) and a width the size of

(5x + 3).

Answer 1

Area of a rectangle (A)= length(l) *Width(w)

l=(x-7)

w=(5x+3)

:. A= (x-7)(5x+3)

=5x(x-7)+3(x-7)

A=5x^2-35x+3x-21

A=5x^2 -32x -21

The area is in algebraic expression

Explanation: