Math, asked by pandeysohit88, 6 months ago

2x³-x²-y²+3 agar x=2y=-1 ho to​

Answers

Answered by tausip5
0

Answer:

it's very simple dear..

Step-by-step explanation:

Just put the values

2x³ - x² - y² +3

2* (2y)³ - (2y)² - (-1/2)²+3 here y = -1/2 by solving

2y = -1 or y = -1/2

2* 8y³ - 4y² -1/4 +3

2* 8* (-1/2)³ -4* (-1/2)² -1/4 +3

16 * (-1/8) -4* 1/4 + 11/4

-2 -1 + 11/4

-3 + 11/4

-1/4

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