9 whole to the power x + 2 minus 240 is equal to 9 to the power x
Answers
Answered by
0
Heya!
9^x+2 - 240 = 9^x
=)9^x+2 - 9^x =240
=) 9^x ( 9^2 - 9^0 ) = 240
=) 9^x ( 81 - 1 ) =240
=) 9^x * 80 =240
=) 9^x = 240/80
=)9^x = 3
=) 3^2x =3^1
=) 2x = 1
=) x = 1/2
Hope it helps u.
9^x+2 - 240 = 9^x
=)9^x+2 - 9^x =240
=) 9^x ( 9^2 - 9^0 ) = 240
=) 9^x ( 81 - 1 ) =240
=) 9^x * 80 =240
=) 9^x = 240/80
=)9^x = 3
=) 3^2x =3^1
=) 2x = 1
=) x = 1/2
Hope it helps u.
Answered by
0
Answer:
0.5
Step-by-step explanation:
9^(x + 2) - 240 = 9^x
9^x.9² = 240 + 9^x
81.9^x = 240 + 9^x
81.9^x-9^x=240
9^x(81 - 1) = 240
9^x .80 = 240
9^x = 3
3^2x = 3¹
[ use, x^m = x^n then, m = n ]
2x = 1
x = 1/2
=0.5
Similar questions