72x+72x+2=2450
72x+72x.72=2450
72x.(1+72)=2450
72x.50=2450
72x =2450:50
72x =49
72x =72.1
=>x=1
Chuc bn hoc tot
Các câu hỏi tương tự
\(7^{2x}+7^{2x+2}=2450\)
72x +72x+2=2450
Tìm x
72x+72x+2=2450
Tìm x biết:
\(7^{2x}+7^{2x+2}=2450\)
\(7^{2x}+7^{2x+2}=2450\)
TÌM X
\(7^{2x}+7^{2x+2}=2450\)
Tìm x
a,(2x+1).\(\left(x-\frac{1}{7}\right)=0\)
b,\(7^{2x}+7^{2x+2}=2450\)
a) 2x+2x+3=144
b) 72x+72x+2=2450
72x + 72x+2 = 2450
Mong các bạn giúp. Thank you so much !!!