if the value of x + y  =11 and xy= 28, then the value of $x^2 + y^2$ is
  • 65
  • 100
  • 45
  • 56
which of these is a binomial?
  • $3a^2 + 7b + 2c$
  • $4 \times a + a$
  • $pqr+2pq+5pqr$
  • $8 - y -5x$
The value of $a(a+ b^2 +c) – b^2(a+b+c) -c (a+b^2)$ is
  • $a^2 -b^3 -2b^2c$
  • $a^2 - b^3$
  • $ a^2 – 2b^2c$
  • None of these
if $a + \frac {1}{a}=5$, then the value $a^2 + \frac {1}{a^2}$ is
  • 27
  • 23
  • 25
  • 24
Common factor of $11pq^2$, $121p^2q^3$, $1331p^2q$ is
  • $11p^2q^2$
  • $11p^2q$
  • $11pq^2$
  • $11pq$
Find the value of x if $.07 x = 1.07^2 -1^2$
  • 1.07
  • 2.07
  • .07
  • 3.07
Match the column
class8-maths-chapter-9-mcq.png
  • p -> iv, q -> iii , r -> i, s ->iii
  • p -> ii, q -> i , r -> iv, s ->iii
  • p -> iii, q -> iv , r -> i, s ->ii
  • p -> i, q -> iv , r -> iii, s ->ii
If m – n = 16 and $m^2 + n^2 = 400$, then find mn.
  • 120
  • 144
  • 121
  • 160
0 h : 0 m : 1 s

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