Multiply: $$( 3 x - 3 ) ( 5 x - 5 )$$
A) $15 x ^ { 2 } - 18 x - 8$
B) $15 x ^ { 2 } - 30 x + 15$
C) $3 x ^ { 2 } + 15 x + 15$
D) $8 x ^ { 2 } - 15 x + 5$
E) $15 x ^ { 2 } - 18 x - 15$

Question

Quizplus · Accepted Answer

We can use the FOIL method to multiply the two binomials:

$$(3x-3)(5x-5) = 3x \cdot 5x - 3x \cdot 5 - 3 \cdot 5x + 3 \cdot 5 = 15x^2 - 30x + 15$$

Therefore, the best choice is B.

Multiply (3x−3)(5x−5)( 3 x - 3 ) ( 5 x - 5 )(3x−3)(5x−5)

Multiply $( 3 x - 3 ) ( 5 x - 5 )$