Simplify 5b4×4b3 what is the answer for it

asked Aug 1, 2022 9.5k views

3 votes

by Avck

3.1k points

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6 votes

Answer:

${ \rm{ {5b}^(4) * {4b}^(3) }}$

• from laws of indices:

$\hookrightarrow \: { \boxed{ \rm{ {rx}^(n) + {px}^(m) = (r * p) {x}^((n + m)) }}} \\$

• substitute:

${ \rm{ {5b}^(4) * {4b}^(3) = (5 * 4) {b}^((4 + 3)) }} \\ \\ = { \boxed{ \boxed{ \rm{ \: 20 {b}^(7) \: \: }}}}$

DarkWanderer answered Aug 5, 2022

3.2k points

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