Question

(iii) The coefficient of xyz in - xyz is -1.
(iv) The coefficient of b in -abc is -ac.
3
EXERCISE 8B
1. If a = 2 and b = 3, find the value of
(i) a + b
(ii) a² + ab
(iii) ab - a?
(iv) 2a - 3b
(v) 5a2 - 2ab
(vi) a’ - b
2. If x = 1, y = 2 and z = 5, find the value of
(i) 3x - 2y + 4z
(ii) x² + y² + z?
(iii) 2x2 – 3y2 + 2?
(iv) xy + yz - Zx
(v) 2x”y - 5yz + xy?
(vi) x3 – 43 – 2
3. If p = -2, q = -1 and r = 3, find the value of
(i) p2 +q2 -
(ii) 2p? – q2 + 3r? (iii) p - q-1
(iv) p8 + q® + rº +3 par (v) 3p’q +5 pq+ 2 par (vi) pº + q* - 54
4. Write the coefficient of
(i) x in 13x
(ii) y in -5y
(iii) a in bab
(iv) z in -7xz
(v) p in -2 par (vi) y2 in 8xyz (vii) xº in x
(viii) x2 in - x
2
5. Write the numerical coefficient of
(i) ab
(ii) -6bc
(iii) 7xyz
(iv) – 2x®y?
6. Write the constant term of
3
3
3​

Answer 1

Answer:

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Step-by-step explanation:

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