In this page we have Important questions for Factorization Class 8 Maths Chapter 14 . Hope you like them and do not forget to like , social share
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LHS=(11m + 4n)2 – (11mn – 4n)2 = $121m^2 + 16n^2 + 88mn -(121m^2n^2 + 16n^2 -88mn^2)=121m^2 -121m^2n^2 + 88mn + 88mn^2$
RHS = 176mn2
LHS≠ RHS .
So this is incorrect
Correct statement would be
$(11m + 4n)^2 -(11mn -4n)^2 =121m^2 -121m^2n^2 + 88mn + 88mn^2$
Question 8
True and false
(a) The value of (a + 1) (a – 1) (a2 + 1) is a4 + 1.
(b) x + y+ z is a monomial
(c) Some of the factors of $\frac {p^2}{2} + \frac {p}{2}$ are p,1/2 and (p+1)
(d)if xy=20 and (x- y) =1, the value (x+y) =9 Solution
Question 10
The Length and breadth of the rectangle is (x+y) and (x-y) respectively. What is the area of the rectangle Solution
Area= Length x Breath
Therefore
Area is =$(x+y)(x-y)= x^2 -y^2$
Question 11
What should be added to 4c(-a + b + c) to obtain 3a (a + b + c) - 2b (a - b + c)? Solution
Let y is to be Added, then
$y + 4c(-a + b + c)=3a (a + b + c) - 2b (a - b + c)$
$y=3a (a + b + c) - 2b (a - b + c) - 4c(-a + b + c)=3a^2 + 3ab + 3ac -2ab +2b^2 -2bc +4ac -4bc-4c^2=3a^2 + ab+ 7ac + 2b^2 - 6bc -4c^2$
Summary
This Important questions for Factorization Class 8 Maths Chapter 14 with answers is prepared keeping in mind the latest syllabus of CBSE . This has been designed in a way to improve the academic performance of the students. If you find mistakes , please do provide the feedback on the mail.
