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16-10-2020
Mathematics

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if x=3 and y=2 then find the value of 2x²-xy+y²-4x

Respuesta :

16-10-2020

Answer:

4

Step-by-step explanation:

Put x = 3 and y = 2 to the expression 2x²- xy+y²- 4x:

2(3)² - (3)(2) + 2² - 4(3) use PEMDAS

=2(9) - 6 + 4 - 12

= 18 - 6 + 4 - 12

= (18 + 4) - (6 + 12)

= 22 - 18

= 4

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