Q 1: 9a^{2}  (3a+4b)^{2} = _____? 4b(6a+4b) 4b(6a4b) 4b(6a+4b)

Q 2: Find the value of (251)^{2} using formula. 63001 6301 63206

Q 3: 36x^{2}  24xy + ..... 3y^{2} 6y^{2} 2y^{2} 4y^{2}

Q 4: 4x^{2} + ..... + y^{2}. 4xy 4xy 3xy 2xy

Q 5: (9x9)(8x+7) = 72x^{2}9x____. Answer:

Q 6: (9x1)^{2} = _____? 81x^{2}18x+1 18x^{2}2x+14 81x^{2}+18x1 9x^{2}9x+4

Q 7: Factorise 6x(7a9)  3y(7a9). (5x+y)(4a7) (6x3y)(7a9) (2x+3y)(a9) (6x+3y)(7a9)

Q 8: 19(7x+6y+7z) = _____? Answer:

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