Question

Can any one do B and B please help me I need help me please thank you

Answer 1

Answer:

see below

Step-by-step explanation:

1 B    Answer :

$7\times7\times7\times7\times7/7\times7\times7\times7=7$    or    $7^{2+3}/7^{4} =7^{5-4} =7^{1} =7$

2 B    Answer :

$k^{4\times2} \times k^{5} =k^{8+5} =k^{13}$

3B    Answer :

$5a-15-a/1=5a-a-15=4a-15$

Hope that help