2x^2 + 17x -21 cannot be factored nicely, if it was +21 you could, but the zeros for this have to gotten using the quadratic equation
-b +/- (b^2-4ac)^1/2
2a
so
-17 +/- (17^2-4(2)(-21))^1/2
2(2)
-17 +/- (457)^1/2
4
so the zeros are roughly 1.094 and -9.594
Answer:
62
Step-by-step explanation:
26+36=x
x=62
we call the smaller integer x the greater x+1 (consecutive)
x = 2(x+1) - 12
x=2x+2-12
x-2x=2-12
-x=-10
x=10
x+1=11