63 = 9k
divide by 9 on each side to get k by itself
k = 7
Answer:
( a+b) ( m^2 + n^2)
Step-by-step explanation:
factorise like terms
m^2 ( a + b ) + n^2 ( m^2 + n^2)
then put like terms together put remaining terms in a bracket
( a + b) ( m^2 + n^2 )
Answer:
x^2+1
Step-by-step explanation:
Answer:
simple interest
Step-by-step explanation: