Find the product.
-$$( 10 r - 11 ) ( 10 r + 11 )$$
A) $100 r ^ { 2 } - 220 r - 121$
B) $100 + 220 r - 121 r ^ { 2 }$
C) $10 r ^ { 2 } - 121$
D) $100 r ^ { 2 } - 121$

Question

Quizplus · Accepted Answer

This is a product of a sum and a difference, which follows the formula $(a - b)(a + b) = a^2 - b^2$. Applying this to the given expression: $(10r)^2 - (11)^2 = 100r^2 - 121$.

Find the Product (10r−11)(10r+11)( 10 r - 11 ) ( 10 r + 11 )(10r−11)(10r+11)

Find the Product $( 10 r - 11 ) ( 10 r + 11 )$