(52, 1)
(5, -4)
(2, 1)
(1, −52)
(1,-2)
Correct answer is D
22r−1 - 53 = 1r+2
22r−1 - 1r+2 = 53
2r+4−2r+12r−1(r+2) = 53
5(2r+1)(r+2) = 53
5(2r - 1)(r + 2) = 15
(10r - 5)(r + 2) = 15
10r2 + 20r - 5r - 10 = 15
10r2 + 15r = 25
10r2 + 15r - 25 = 0
2r2 + 3r - 5 = 0
(2r2 + 5r)(2r + 5) = r(2r + 5) - 1(2r + 5)
(r - 1)(2r + 5) = 0
r = 1 or −52
In the diagram, QR//ST, /PQ/ = /PR/ and < PST = 75o. Find the value of y...
A cuboid has a diagonal of length 9cm and a square base of side 4cm. What is its height? ...
Find the determinant of the matrix A = \(\begin{pmatrix} 2 & 3 \\ 1 & 3&...
If 20(mod 9) is equivalent to y(mod 6), find y. ...
A trader bought an engine for $15,000.00 outside Nigeria. If the exchange rate is $0.075 to N1....
The 4th term of an A.P. is 13 while the 10th term is 31. Find the 24th term. ...
The angle of elevation of the top T of a pole from a point X on the horizontal ground is 32°, if...