Step-by-step explanation:
RS Aggarwal Class 8 Solutions Chapter 7 Factorisation Ex 7D
June 30, 2018 by Prasanna
RS Aggarwal Class 8 Solutions Chapter 7 Factorisation Ex 7D
These Solutions are part of RS Aggarwal Solutions Class 8. Here we have given RS Aggarwal Solutions Class 8 Chapter 7 Factorisation Ex 7D.
Other Exercises
RS Aggarwal Solutions Class 8 Chapter 7 Factorisation Ex 7ARS Aggarwal Solutions Class 8 Chapter 7 Factorisation Ex 7BRS Aggarwal Solutions Class 8 Chapter 7 Factorisation Ex 7CRS Aggarwal Solutions Class 8 Chapter 7 Factorisation Ex 7DRS Aggarwal Solutions Class 8 Chapter 7 Factorisation Ex 7E
Question 1.
Solution:
x2 + 5x + 6
= x2 + 2x + 3x + 6
{6 = 2 x 3, 5 = 2 + 3}
= x (x + 2) + 3 (x + 2)
= (x + 2) (x + 3) Ans.
Question 2.
Solution:
y2 + 10y + 24
= y2 + 6y + 4y + 24
{24 = 6 x 4, 10 = 6 + 4}
= y (y + 6) + 4 (y + 6)
= (y + 6) (y + 4)
Question 3.
Solution:
z2 + 12x + 27
{27 = 9 x 3, 12 = 9 + 3}
= z2 + 9z + 3z + 27
= z (z + 9) + 3 (z + 9)
= (z + 9) (z + 3)
Question 4.
Solution:
p2 + 6p + 8
= p2 + 4p + 2p + 8
{ 8 = 4 x 2, 6 = 4 + 2}
= p (p + 4) + 2 (p + 4)
= (p + 4) (p + 2)