Question

subtract polynomials 7.8 X -3.4 Y plus Z and -9.2 X +4.8 Y -2.1 Z then place the answer in the proper location on the grid right answer in XYZ order and include the tenths place

Answer 1

• 17x - 8.2y + 3.1z

Explanation:

Given

• 7.8x -3.4y + z subtract
• -9.2x + 4.8y - 2.1z

Solution

• 7.8x -3.4y + z - (-9.2x + 4.8y - 2.1z) =
• 7.8x -3.4y + z + 9.2x - 4.8y + 2.1z =
• x(7.8 + 9.2) -y(3.4 + 4.8) +z(1 + 2.1) =
• 17x - 8.2y + 3.1z