My equation was (1230÷3) ×4 ×this is the multiplication sign
Given that x =4 and y= 1 over 2, find the value of 2x²- 3xy
2 answers:
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Answer:
x = 4
Step-by-step explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
x² + 1² = 9²
x² + 1 = 81 ( subtract 1 from both sides )
x² = 80 ( take square root of both sides )
x = =
=
×
= 4
