Q.1]Express the numbers in usual form:
(1)7.12×10^{8}
(2)6.31×10^{-5}
Q.2]using suitable identity, find the square of 94.
Q.3] Divide 9x-6x²+x³-2by (x-2)
Q.4]The distance between Sun and Earth is 1.496×10^{11} metres and distance between Earth and Moon is 3.84×10^{8} metres. During solar eclipse, moon comes in between Earth and Sun. what is the distance between moon and sun at that time?
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