The answer depends on the value of x, which is not given.
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That depends on the value of "x". Whatever the value of "x", "x + 40" is 40 more than that.
x^2+2x+40 = x^2-x+190Subtract x^2 from both sides2x+40 = -x+190Add x to both sides3x + 40 = 190Subtract 40 from each side3x = 150Divide both sides by 3x = 50
10 + x = 50x = 40
x2+14x+40 = (x+4)(x+10) when factored
x=34
10x plus 40 is 50x.10+40=50 and then you just add the x so:10x+40=50x