10 points !! Which expression is equivalent to this polynomial x^2+12
1 answer:
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Answer:
y=8
Step-by-step explanation:
substitute (plug in) 5 for x because it says that the value of x is 5
Answer:
x = 5
Step-by-step explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of squares on the other 2 sides, that is
x² + 12² = 13²
x² + 144 = 169 ( subtract 144 from both sides )
x² = 25 ( take the square root of both sides )
x = = 5