x2 - 14x + 45 = (x - 9)(x - 5)
x2+14x+40 = (x+4)(x+10) when factored
x2+14x+49 = (x+7)(x+7) when factored
51.07142857142857
x2+14x+48=0 complete the square: add 1 to each side x2+14x+49=1 (x+7)2=1 so (x+7)= 1 or (x+7)=-1 x+7=1 means x=1-7=-6 x+7=-1 means x=-1-7=-8 and x=-8 or x=-6 Check the answer: (-6)2 -14(6)+48= 36-84+48=0 and 64-112+48=0 You can also solve it with the quadratic formula and a few other ways!
(x2 + 14x + 49) = (x + 7)2
The given expression does not have rational factors, so the question cannot be abut factorising. Evaluating x2 - 14x + 9 depends on the value of x.
-x2+14x=49
x2 - 14x + 45 = (x - 9)(x - 5)
x2+14x+40 = (x+4)(x+10) when factored
x2 - 14x + 49(x - 7) (x - 7)
x2 - 14x + 45 = (x - 5)(x - 9).
x2+14x+49 = (x+7)(x+7) when factored
x2 - 14x + 49 = (x - 7)2
doesnt make sense
51.07142857142857
49 x2 + 14x = -7 x2 + 14x + 49 = 42 (x + 7)2 = 42 x = -7 ± √42