Write the product using exponents.
3•3•3•y•y•y
As 3 is used as a factor 3 times, its exponent is 3 and y is used as a factor 3 times, its exponent is 3.
3•3•3•y•y•y=33y3
Write down the following in the product form:(i) x2y4(ii) 6y5(iii) 9xy2z(iv) 10a3b3c3
Use direct method to ecaluate the following products :
(i) (x + 8)(x + 3)
(ii) (y + 5)(y - 3)
(iii) (a- 8)(a+ 2)
(iv) (b - 3)(b - 5)
(v) (3x - 2y)(2x + y)
(vi) (5a + 16)(3a -7)
(vii) (8 - b)(3 + b)