Algebra Quiz

What should be added to x²+xy+y² to obtain 2x²+3xy?

• x+2xy-y²

• x²+2xy-y²

• x² - 2xy + y²

• x+2xy-y

State True or False: (a – b) (a + b) + (b – c) (b + c) + (c – a) (c + a) = 0

• TRUE

• FALSE

Write the solution for the variable r :-

r+8+y=x

y=6x and x=5

• r=3

• r=-38

• r=-39

• r=38

Write an algebraic expression for each of the following: (a) 3 subtracted from a number y. (b) 5 is added to three times a number x.

• (a) 3-y, (b) 5+3*x

• (a) 3y, (b) 5+3*x

• (a) y-3, (b) 5+3*x

• (a) y-3, (b) 5+3x

Which of these can not be an equation ?

(When the variable is a whole number and can be an integer)

• 4X+4=15

• 3X-3=-6

• 15+X > 1

• 24X = -24

Write the expression for the given statment -

if 12 less than 3 times of X

( Write only the expression)

Write the expression for the given statment -

Y is multiplied by 4 and then it is added to 12.

( Write only the expression)

Ragu had a square field full of wheat crop . He had 50 achre. But one day he saw that ram took some part of it (variable p) . After a big fight ram gave ragu's 2 achre only but still ram had some area of ragu (variable d).

Give expression for it:-

• 50-p+2=d

• 50+p-2=d

• 50+p-2

• 50-p+2

Ravi had bought 100 pencils for his 3 sons .which costs $1 on total but someone stole some pencils while returning home (variable y).but an old man gave 11 pencil to ravi as he was a kind person.

give expession for how much pencil does ravi has.

• 100-y+11=111y

• 100-y+11

• 100+11=y

• 100+y-11