Gr.7- Math - Expanding Question Preview (ID: 51383)


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Expand : (3x² + 3)(2x + 6)
a) 6x³ + 6x + 18
b) 6x³ - 18x² + 6x + 18
c) 6x³ + 18
d) 6x³ + 18x² + 6x + 18

Reduce like terms : 2x²y + 4xy - 2x²y + 3x²y + 5xy + 2
a) 3x²y+ 9xy + 2
b) 2x²y - 9xy
c) 3x²y - 9xy + 2
d) - 3x²y + 9xy - 2

Expand : -3(-x³ - x² + x)
a) +3x³ + 3x² - 3x
b) - 3x² + 3x
c) 3x³ - 3x² + x
d) -3x³ + 3x² + 3x

Expand : (x+2)(x - 3)
a) x² + x - 6
b) x² - x + 6
c) x² - 3x + 6
d) x² - x - 6

Expand : - 3x(2x - 4x²)
a) -6x² + 12x³
b) -6x² - 12x³
c) -6x + 12x³
d) +6x² - 12x

Expand : 2( x³ + 3x + 2x⁴)
a) 2x³ + 6x + 2x
b) 2x³ + 6x + 4x⁴
c) 2x + 6x² + 4x
d) 6x³ + 2x + 4x⁴

Multiply : (-3b²)(+4ab)
a) -12ab³
b) 12ab
c) ab³
d) -7ab³

Solve: 6xy - 4x² - 6xy + 3x²
a) 12xy
b) -x²
c) + x²
d) 7x²

Multiply: (2m)(3m)
a) 6m
b) 5m
c) 6m²
d) - 6m²

Reduce the like terms : x² + 2y² + 4y²
a) x² + 6y²
b) 10xy
c) 2x² + y
d) 6y + x²

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