question 7 fast please Subtract
(a) 6xy from 15xy
09a3 9a2- - from 18 a2—7 +
b 2a3 + 10a — 10 from 4a3 + 80
— + 5x + 7 from 3x3
13ab - 4172 - 7b2 from 3a2 — 7b2 + 8ab
4. Combine like terms to simplify each expression :
(d) 3xy • 2yz + 7zx • 3xy + 5yz + 2zx
(a) (—10a3b + 12a2b2—6ab3) — (8a3b + — 9ab3) — 5) —
(c) - 4ab + 2) + (7a2b + "lab - 4)
G) What must be added to x2y — 3x + 4 to get the sum —7x2y + 8x — 5?
7. What must be taken away from 3x2 — 5xy + 2y to obtain 9x2 + 3y — 2xy + 7?
8. Subtract 4x — 2x2 — 2 from the sum of the polynomials x2 + 3x — 2, 3x2 — x
9. From the sum of 9x2 + 2ty — 5y2 and 2.12 — 3y subtract the sum of 3x2 — 5y2 and
10.
Find : (a) A + B -C, (b) A - 2B B + 3C
11. If u 3x2 2—ry + y2, v = 2x2 + 5xy + 7y2, w = 5x2 + 3xy + 8y2, then show that u +
12. Simplify : [(10x3y2 — 15x2y2 + 5xy2) + (2x2y — 3x2y2 + 4) — (6x2y — xy2 — 15x3y2)l
VALUATING AN ALGEBRAIC EXPRESSION
