Maths class 8th algebric expressions and quadratic equations

Maths                                                 Class - 8th   (Q.1)  In complete factorised form, the expression 4a2 – 4a + 1 is equivalent to

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(a) (2a - 1)².
(b) (2a - 1).
(c) 2(a – 1).
(d) 2(2a -1).

(Q.2)  In complete factorised form, the expression a2 + 5a + 6 is equivalent to

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(a) a² + 3.
(b) (a + 2)(a + 3).
(c) (a + 6)(a - 1).
(d) (a + 3)(a – 2).

(Q.3)  The factors of x2 – 7x + 12 are

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(a) (x - 4).
(b) (x - 3).
(c) (x + 4) and (x + 3).
(d) (x - 3) and (x - 4).

(Q.4)  Dividing 64a2b4c3 by 8a2b2c3 gives

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(a) 8a².
(b) 8b².
(c) 8.
(d) 8abc.

(Q.5)  The product of (a -4)(a +4) is

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(a) (a² + 16).
(b) (a - 4)².
(c) (a + 4)².
(d) (a² – 16).

(Q.6)  Subtract 7x -3x² from 4x + 8x²

(Q.7)  Sum of 4xy and -3xy is

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(a) 7xy
(b) 4xy
(c) 3xy
(d) xy

(Q.8)  Expressions that contains only one term is called:

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(a) Identity
(b) Monomial
(c) Like Term
(d) UnlikeTerm

(Q.9)  Unlike term of the expressions 7x, 7xy, x, -4x is

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(a) 7xy
(b) 7x
(c) x
(d) -4x

(Q.10)  Find the co-efficient of x2, xy and y in the expression – 4x2 + xy – y are

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(a) 4, 1, 1
(b) -4, 1, -1
(c) 1, -4, -2
(d) 2, 1, -1