Question

can someone please check if this is right? i would appreciate it!!

Answer 1

ANSWER

B,C,E

EXPLANATION

The given exponentiial expression is

${7}^{8} \times 7 = {7}^{8 + 1} = {7}^{9}$

The expression that simplify to

${7}^{9}$

are all equivalent to the above expression.

A

${7}^{3} \times {7}^{3} = {7}^{3 + 3} = {7}^{6}$

B

$\frac{ {7}^{18} }{ {7}^{9} } = {7}^{18 - 9} = {7}^{9}$

C

$( {7}^{3} )^{3} = {7}^{3 \times 3} = {7}^{9}$

D

${7}^{4} + {7}^{5} = {7}^{4} (1 + 7) = 8( {7}^{4} )$

E.

${7}^{4} \times {7}^{5} = {7}^{4 + 5} = {7}^{9}$

Therefore options B, C and E are all equivalent to the given expression.