Practice the worksheet on factoring trinomials by substitution. We know how to factor trinomial of the form x

But when a given trinomial does not fit in the form of x

**1. Factor the
following trinomials using the substitution method:**

(ii) 3(3x + 2)

(iii) 2(a + 2b)

(iv) (a + b)

(v) (x

(vi) 6(x – y)

(vii) (p

(viii) (m

(ix) (x

(x) (x + y)

(i) (x – 2y)

(ii) 3(a – b)

(iii) (5a – 3b)

(iv) (x – 4y)

(v) (3r – 4)

(vi) (7m – 1)

Answers for the worksheet on factoring trinomials by substitution are given below to check the exact answers of the above trinomial expressions.

**Answers:**

**1.** (i) 2(a – b –
4)(2a – 2b + 1)

(ii) (3x – 4)(9x + 5)

(iii) (a + 2b + 1)(2a + 4b – 1)

(iv) (a + b – 3)( a + b + 2)

(v) (x - 8)(x + 5)(x - 2)(x - 1)

(vi) (2x - 2y + 3)(3x - 3y - 5)

(vii) (p(viii) (m

(ix) (x – 10)(x + 2)(x – 9)(x + 1)

(x) (x + y – 7)(x + y – 1)

**2.** (i) (x – 2y +
9)(x – 2y – 2)

(ii) (a – b – 4)(3a – 3b + 11)

(iii) (5a - 3b + 4)(5a - 3b + 4)

(iv) (x – 4y – 5)(x – 4y – 5)

(v) (3r – 2)(3r - 10)

(vi) 7(7m – 4)(m + 2)

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