Question 1120250
This is x^2+2x-15>=x^2+7x-3
-5x >=+12
x  < = -2.4
Check by trying 0 which should not work
-15 >=-3 does not work'
and -3 which should work
-12 >=-13 which is true. 
{{{graph(300,300,-10,10,-20,10,x^2+2x-15,x^2+7x-3)}}}