Find the interval for which x^2 - 7x + 10 </= 0
Factorise the quadratic by finding two numbers that add to make -7 and multiply to make 10. (i.e. -2 and -5). So x^2 - 7x + 10 = (x - 2)(x - 5) </= 0. Sketch the quadratic to see where it is negative or zero. Find that the interval is 2 </= x </= 5.
LT
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