Find x:
\(\left(20x-10\right).8.\left(15x+2\right)=10\)
12x + 23 - 76 - 2x3 = 8
(23x + 8) . (10x - 5) - 10 = 7
Prove that for any integer x, y then
A = (x + y) (x + 2y) (x + 3y) (x + 4y) + y4 is a perfect square.
Prove that 4 consecutive natural numbers plus 1 is always a positive number.
S = \(\dfrac{1}{10.11}+\dfrac{1}{11.12}\dfrac{1}{12.13}+...+\dfrac{1}{99.100}\)
=> S = ?
Find \(x\) for B reach the smallest value
B = \(\left(x-2\right)^2+5+10+3\)
Find all values of m for the function y = x4 + 2mx2 + m2 + m has three points extreme.