Question

2^x-5 multiplied by 5^x-4=5

Answer 1

Answer:

$lhs = 2 {}^{x} - 5(5 {}^{x} - 4) \\ \: \: \: \: \: \: = 10 {x}^{2} - 8 {x}^{} - 25 {x}^{} + 20 \\ \: \: \: \: \: \: \: \: = 10 {x}^{2} - 33x + 20$

hope it helps you......