Question

A rectangle has dimensions 3x+5 and x+7. Write an expression for the area of the rectangle as a product and as a polynomial in standard form.

Answer 1

area of rectangle= l.b
=(3x+5)(x+7)=3x(x+7)+5(x+7)

Answer 2

now simplify it and write in standard form i.e ax^2+bx+c

Answer 3

Ah sorry I was walking my dog.
Thank you though.