Use scientific notation to perform the following operations. Leave your answer in scientific notation.
-$\left( 8 \times 10 ^ { 8 } \right) - \left( 5 \times 10 ^ { 7 } \right)$
A) $7.5 \times 10 ^ { 7 }$
B) $7.5 \times 10 ^ { 8 }$
C) $3 \times 10 ^ { 1 }$
D) $3 \times 10 ^ { 8 }$

Question

Quizplus · Accepted Answer

To subtract these numbers, first express them with the same exponent: $8 \times 10^8 = 80 \times 10^7$. Then, $80 \times 10^7 - 5 \times 10^7 = 75 \times 10^7$, which simplifies to $7.5 \times 10^8$.

Use Scientific Notation to Perform the Following Operations (8×108)−(5×107)\left( 8 \times 10 ^ { 8 } \right) - \left( 5 \times 10 ^ { 7 } \right)(8×108)−(5×107)

Use Scientific Notation to Perform the Following Operations $\left( 8 \times 10 ^ { 8 } \right) - \left( 5 \times 10 ^ { 7 } \right)$