Find the product
-$(13 r-5)(13 r+5)$

A) $169+130 \mathrm{r}-25 \mathrm{r}^{2}$
B) $169 r^{2}-130 r-25$
C) $169 r^{2}-25$
D) $13 \mathrm{r}^{2}-25$

Name: Find the product -$(13 r-5)(13 r+5)$ A) $169+130 \mathrm{r}-25 \mathrm{r}^{2}$ B) $169 r^{2}-130 r-25$ C) $169 r^{2}-25$ D) $13 \mathrm{r}^{2}-25$
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Question

Find the product
-$(13 r-5)(13 r+5)$

A) $169+130 \mathrm{r}-25 \mathrm{r}^{2}$
B) $169 r^{2}-130 r-25$
C) $169 r^{2}-25$
D) $13 \mathrm{r}^{2}-25$

Quizplus · Accepted Answer

This is a product of two binomials that form a difference of squares, $(a-b)(a+b)=a^2-b^2$. Here, $a=13r$ and $b=5$, so the product is $169r^2-25$.

Find the Product - (13r−5)(13r+5)(13 r-5)(13 r+5)(13r−5)(13r+5) A) 169+130r−25r2169+130 \mathrm{r}-25 \mathrm{r}^{2}169+130r−25r2 B) 169r2−130r−25169 r^{2}-130 r-25169r2−130r−25

Find the Product
- $(13 r-5)(13 r+5)$ A) $169+130 \mathrm{r}-25 \mathrm{r}^{2}$ B) $169 r^{2}-130 r-25$