Question

Subtract the second expression from the first:

$0.07p^{2}q+3.6p{q}^2-p^2{q}^2;0.003p{q}^2-2p^{2}q+8.5p^2{q}^2$

• A. $2.37p^{2}q+3.597p{q}^2-9.5p^2{q}^3$
• B. $2.07p^{2}q+3.597p{q}^2-9.5p^2{q}^2$
• C. $2.17p^{2}q+3.597p{q}^2-2.5p^2{q}^2$
• D. $2.27p^{2}q+3.597p{q}^2-3.5p^2{q}^2$

Answer 1

Answer: (B)

$2.07p^{2}q+3.597p{q}^2-9.5p^2{q}^2$

$0.07p^{2}q+3.6p{q}^2-p^2{q}^2-(0.003p{q}^2-2p^{2}q+8.5p^2{q}^2)$
$=0.07p^{2}q+3.6p{q}^2-p^2{q}^2-0.003p{q}^2+2p^{2}q-8.5p^2{q}^2$
$=2.07p^{2}q+3.597p{q}^2-9.5p^2{q}^2$