Q. What is the simplified form of the expression (6x4+4x3−2x2+5)−(3x4−2x3+x+4)?A.3x4+2x3−2x2+x+1B.3x4+2x3−2x2−x+9C. 3x4+6x3−2x2+x+1D. 3x4+6x3−2x2−x+1
Subtract and Combine Like Terms: Subtract the second polynomial from the first by combining like terms. This means subtracting the coefficients of the same powers of x in the second polynomial from the corresponding coefficients in the first polynomial.(6x4+4x3−2x2+5)−(3x4−2x3+x+4)=(6x4−3x4)+(4x3−(−2x3))−(2x2−0)+(5−x)−4
Calculate Coefficients for Each Power: Calculate the coefficients for each power of x. For x4: 6x4−3x4=3x4 For x3: 4x3−(−2x3)=4x3+2x3=6x3 For x2: −2x2−0=−2x2 For x: 0−x=−x For the constant term: 5−4=1
Write Simplified Expression: Combine the results from the previous step to write the simplified expression. 3x4+6x3−2x2−x+1
Compare with Options: Compare the simplified expression with the given options to find the correct answer.The simplified expression is 3x4+6x3−2x2−x+1, which matches option D.
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