Multiply the polynomials. $$
( 3.4 a + 7 ) ( 0.5 a - 9 )
$$
A) $1.7 a ^ { 2 } - 27.1 a - 63$
B) $1.7 a ^ { 2 } - 3.5 a - 4.5$
C) $3.9 a - 63$
D) $1.7 a ^ { 2 } - 63$

Question

Quizplus · Accepted Answer

To multiply the polynomials, distribute each term in the first polynomial across each term in the second polynomial: $3.4a \times 0.5a = 1.7a^2$, $3.4a \times -9 = -30.6a$, $7 \times 0.5a = 3.5a$, and $7 \times -9 = -63$. Combining like terms, $1.7a^2 - 30.6a + 3.5a - 63 = 1.7a^2 - 27.1a - 63$.

Multiply the Polynomials (3.4a+7)(0.5a−9)( 3.4 a + 7 ) ( 0.5 a - 9 )(3.4a+7)(0.5a−9)

Multiply the Polynomials $( 3.4 a + 7 ) ( 0.5 a - 9 )$