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### Grade 8 - Mathematics7.34 Special Products: (x+a)(x+b)

#### Formula : (x+a)(x+b) = x2+x(a+b)+a.b

Example:
Find the product of (x+2)(x+3).
Solution:
Using above formula,
(x+2)(x+3) = x2+x(2+3)+2.3
= x2+5x+6

Directions: Solve the following problems. Also write at least ten examples of your own.
 Q 1: Find the product of (x+3)(x+3).x2+6x+9x2+6x+6x2+4x+9 Q 2: Find the product of (x+4)(x+8). x2+12x+36x2+12x+32x2+8x+32 Q 3: Find the product of (x+7)(x+3).x2+21x+10x2+15x+10x2+10x+21 Q 4: Find the product of (x+2)(x+7).x2+5x+14x2+9x+14x2+9x+7 Q 5: Find the product of (x+6)(x+2).x2+12x+8x2+8x+18x2+8x+12 Q 6: Find the product of (x+5)(x+6).x2+9x+30x2+11x+30x2+11x+15 Q 7: Find the product of (x+4)(x+6).x2+10x+24x2+10x+14x2+8x+24 Q 8: Find the product of (x+4)(x+3).x2+5x+12x2+7x+9x2+7x+12 Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!