☰ Contents · Algebra

Adding and subtracting polynomials

Lessons 18 · 1 lessons · Sh.A. Alimov, O.R. Xolmuhamedov, M.A. Mirzaahmedov. Algebra, Grade 7, revised and expanded 5th edition. O‘qituvchi NMIU, Tashkent, 2017
Answers are for parents and teachers.
1
Find (5x² + 2x - 1) + (3x² - 7x + 4).
2
Find (9a - 4b) - (3a - 6b + 2).
3
Simplify (x² - xy) - (xy - y²) + (x² - y²).
4
Let A = 2a² - 3a and B = a² + 4a - 1. Find A + B and evaluate it at a = 2.