SOLUTION
When multiplying exponential expressions , We add their exponents. It is stated in the Laws of exponent (product law)
[tex]( {x}^{3} )( {x}^{4} ) = {x}^{3 + 4} = {x}^{7} [/tex]
ANSWER
[tex] \overbrace{ \underbrace{ \tt{} \purple{ \: \: Stay \: safe \: and \: God \: bless \: you! \: \: }}}[/tex]
