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Mathematics, Other, Fun
8th
grade
Algebraic Expressions and Identities - I
10 questions
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- 1. Multiple ChoiceIs the number 65 a monomial ?TRUEFALSE
- 2. Multiple ChoiceIs this 4/5 monomial ?TRUEFALSE
- 3. Multiple ChoiceCan the following expression be a monomial (xyz + a) where 'a' is any whole numberFor a = 1For a = -1For a = 0Not possible
- 4. Multiple ChoiceSubtract x2 – 3y2 + 7y – 8 from 9x2 – xy + y2 + 5x – 3y8x2 – xy + 4y2 + 5x - 10y – 810x2 – xy - 2y2 + 5x + 4y + 810x2 – xy + 4y2 + 5x - 10y - 88x2 – xy + 4y2 + 5x - 10y + 8
- 5. Multiple ChoiceAdd (a - b - c) ; (b - a - c) and (c - a - b)(a - b - c)(- a - b - c)(a + b - c)(-a - b + c)
- 6. Multiple ChoiceWhat is the product of this monomial and polynomial ?
3xy ( 7z + 2z2 + x + yx)21xyz + 3x2y + 6xy2z + 3x2y23x2y2 + 6xyz2 + 3xy2 + 21xyz6xy2z + 21xyz + 3xy2 + 3x2y23x2y + 3x2y2 + 6xyz2 + 21xyz - 7. Multiple ChoiceThe length of a rectangle is decreased by 3 and breadth is increased by 4. The new area of the rectangle found after changing it's dimensions is same as that of original rectangle before any changes were made.
Which among below is a correct equation ?
Consider length of rectangle to be 'l' and breadth of rectangle to be 'b'4l + 3b = 123l - 4b = 124l - 3b = 123l + 4b = 12 - 8. Multiple ChoiceA rectangle has a length say 'l' and breadth say 'b'. The length is increased and breadth is decreased by 4 units. The perimeter does not changes and so does the area of rectangle.
Which among below is a relation between length and breadth ?b - l = 4l - b = 4- l - b = 4l + b = 4 - 9. Multiple ChoiceThe expression (l + m) (2m + p) − 2m (p + m) can be simplified as2lm + lp2lm + lp − 2mp2lm + lp + mp2lm + lp − mp
- 10. Multiple ChoiceWhat is the product of (x2 − y2) and (3x + 2y)?3x3 − 2y3 + 3x2y + 3xy23x3 + 2y3 - 2x2y − 3xy23x3 − 2y3 + 2x2y − 3xy23x3 − 3y3 + 2x2y − 3xy2
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