43
53
34
35
Correct answer is B
m = 2, n = 1
3m2−2n2m2mn
= 3(2)2−2(1)222+2(1)
= 12−24+2=106
= 53
In the diagram, QRT is a straight line. If angle PTR = 90°, angle PRT = 60°, angle PQR = 30&...
\(\begin{array}{c|c} x & 1 & 2 & 3 & 4 & 5 \\ \hline f & y + 2 & y - 2 &...
Find x if the mean of 2x, 4x, 2x - 13 and 6x is 4. ...
What value of x will make the function x(4 - x) a maximum?...
The value of y for which 15y+15<12y+25 is...
p and q are two positive numbers such that p > 2q. Which one of the following statements is not t...
If (x + 2) and (x - 1) are factors of the expression Lx+2kx2+24, find the values of ...