If P=2x^(2)-5x+2,Q=5x^(2)+6x-3 andR=3x^(2)-x-1.Find the value of 2P-Q+3R
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Answer:
Given
- p=2x^2-5x+2
- q=5x^2+6x-3
- r=3x^2-x-1
To Find
- 2p-q+3r
Solution
=2(2x^2-5x+2)-(5x^2+6x-3)+3(3x^2-x-1)
=(4x^2-10x-4)-(5x^2+6x-3)+(9x^2-3x-3)
=4x^2-10x-4-5x^2-6x+3+9x^2-3x-3
=8x^2-19x+4
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