solve the inequality x^2-4x+4>0
x2 -4x+4>0 => (x-2)(x-2)>0. We can illustrate this line on a graph showing a quadratic whose vertex is at (2,0). Therefore, the answer to our inequality is x<2,x>2 (but x does not equal 2) for all real numbers x.
JA
Related Maths GCSE answers
All answers ▸Solve the following simultaneous equations. 2x + 5y = -4. 7x + y = 19
f(x)=2x+c, g(x) = cx+5, fg(x)= 6x+d, work out the value of d
x^2+10x+6=0 Find x
An amount of money was invested for 8 years. It earned compound interest at 2.5% per year. After 8 years the total value of the investment was £11,696.67. Work out the total interest earned.