Exercise 22.2 Multiply
i) 3a(5a-2b) ii) 5x²(3x+7)
ii) x+y+(6x?-9)
iv) 4ab(3a-5b+7
Simplify
7a(3a+4b)-5b(6a-5b) in 3x²(3x-
5m(2m-3)+4(2m-5) iv) a’(b2-
3a(a+b-c) +2b (a-b+c) vi) x®(4x2-
i
240

The horse latitudes-high-pressure zones about 30 degrees north and 30 degrees south of the equator.-warm air traveling away from the equator cools and sinks-weather tends to be clear and drythe doldrums-low-pressure near equator-air rises and spreads out toward the poles-rising moist air produces clouds and heavy rainthe westerlies-blow from the west-move from the horse latitudes toward the poles.-bring storms across much of the united statesthe tradewinds-blow from the east-move from the horse latitudes toward the equator  -strong, steady winds