good question!
Any variable (x,y,z) having power zero is equal to one...........
since,
12x0=??
12(1) since x0=1
thus
12 is the answer
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2*2 - 12x +16 =0 4 - 12x +16 =0 -12x + 16 +4 =0 -12x + 20 =0 -12x = -20 x = 1.666666667
Presumably this is a quadratic equation question in the form of: 9x2-12x+4 = 0 When factored: (3x-2)(3x-2) = 0 Solution: x = 2/3 and also x = 2/3 (they both have equal roots)
16
y=12x+0 the slope is 12
2 to the power 0 or 20 is equal to 1