Math, asked by Anonymous, 3 months ago


21. What should be subtracted from 3x2 - 4y2 + 5xy + 20 to obtain x2 - y2 + 6xy + 20%

Answers

Answered by prithishwari2007
1

Answer:

3x²-4y²+5xy+20

x² -y² +6xy+20

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+2x²-3y²+xy+0

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Answered by shreekrishna35pdv8u8
2

Answer:

3 {x}^{2}  - 4 {y}^{2}  + 5xy + 20 - (x ^{2}  -  {y}^{2}  + 6xy  + 20)  \\  = 3 {x}^{2} −4y2+5xy+20− {x}^{2}  +  {y}^{2}  - 6xy - 20 \\ =2 {x}^{2}  - 3 {y}^{2}  - xy

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