Answer:
[tex]5^{9}[/tex]
Step-by-step explanation:
Indicie multiplication works by adding the exponent presuming that the base is the same.
[tex]4^{7}[/tex], 4 is the base and so stays the same, 7 is the exponent.
[tex]x^{2}[/tex], here the equation is the same as x * x as exponents work by multiplying the base, x, by iteself y times, where y is the exponent and in this case 4.
As we know this, [tex]x^{2} * x^{2}[/tex] can be simplified too [tex]x^{4}[/tex], which is the same as
x * x * x * x, so we know in such a situation we just add the two exponents together.
