### Home > CCA > Chapter 5 > Lesson 5.3.1 > Problem5-89

5-89.

Find the missing areas and dimensions for each generic rectangle below. Then write each area as a sum and as a product.

1.  $4x$ $16x^2$ $1$
• $\left(4x + 1\right)\left(4x + 1\right) = 16x^{2} + 8x +1$

1.  $10y$ $-12x$ $2y$ $-3$
• What must be multiplied by $2y$ to get $10y$? Put that expression where the blue circle is.

•  $\text{b} \enclose{circle}[mathcolor="blue"]{\color{black}{. \ }}$ $10y$ $-12x$ $2y$ $-3$
• What must be multiplied by $−3$ to get $−12x$? Put that expression where the blue circle is.

•  $\text{b.}$ $10y$ $\enclose{circle}[mathcolor="blue"]{\color{black}{ \ }}$ $-12x$ $2y$ $-3$