Email us to get an instant 20% discount on highly effective K-12 Math & English kwizNET Programs!

#### Online Quiz (WorksheetABCD)

Questions Per Quiz = 2 4 6 8 10

### Grade 7 - Mathematics2.2 Subtraction of Polynomials

 Let A and B are two polynomials, then A-B = A+(-B) Example: Let A = 3x2+2x-1 and B = 2x2-x+1, find 'A-B'. Solution: The additive inverse of B is -B, that is -2x2+x-1. A-B = A+(-B) = (3x2+2x-1)+(-2x2+x-1) = (3x2-2x2)+(2x+x)+(-1-1) = (3-2)x2+(2+1)x+(-1-1) = x2+3x-2. Directions: Solve the following problems. Also write at least ten examples of your own.
 Q 1: (12x2-7x+3)-(4x2-3x+2) = _____?8x2-4x+15x2+3x+36x2+2x+28x2+4x-1 Q 2: (3x2-2x+1)-(2x2+7x+2) = _____?x2-9x-1x2+8x+1-x3+5x+2x1+4x+6 Q 3: (x2-9x+7)-(2x2-5x+5) = _____?-x2+4x+3x1-5x+5-x2-4x+2x2-4x+2 Q 4: (8x3-7x2+5)-(7x2-5) = _____?7x3+2x2+58x3+4x2+108x3-14x2+106x3+2x2+6 Q 5: (9x2-5x+4)-(5x2+2x-4) = _____?4x2-7x+84x2+8x+73x2+6x+74x2+7x+8 Q 6: (3x3-2x2-9x)-(x3-2x2-5x) = _____?2x3-4xx2+4x-4x3+4x2+x2+4x Question 7: This question is available to subscribers only! Question 8: This question is available to subscribers only!