Question

length=3x+1 breath=5-x find area of rectangle

Answer 1

area of rectangle=1/2length×breath

000

Answer 2

Area of rectangle is length x breath

= (3x+1)(5-x)

=15x-3x^2+5-x

=14x-3x^2+5

=-(3x^2-14x-5)

=-(3x^2+15x-x-5)

=-3x^2-15x+x+5

=-3x(x+5)+1(x+5)

=-(3x-1)(x+5).