Questions asked by Ummi

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• How do you find the coeffient of x in the expression of ( 3x-2) (5x+2)?
  
• Simplify (y-z)square -2yz?
  
• Multiply (3-a) by (5-2a)?
  
• If a ball throwing vertically up ward reach a maximum height at 50 above the level of projection what will be it time taken to reach higher and the speed of the thrown (take g=10m/s2)?
  
• If a bullet is fired from a point making an angle of 40° to the horizontal H. The initial velocity of bullet is 30m/s what will be it greatest highet reacted and the time to takes to reach maximum higher?