Question

Determine the area of the red triangular region. 4x+2 M x 2x-2 $

Answer 1

The area of the triangle. (WHOLE)

$(4x+2)(2x-2)=8x^{2} -4x-4$

The area of the gray square.

$(x)(x+1)=x^{2} +x$

Subtract.

$(8x^{2} -4x-4)-(x^{2} +x)\\=7x^{2} -3x-4$

Hope this helped.