1. Find x and y intercepts f(x)=5x^2-35 x-intercepts: ( ) ( 7, 0 , − 7, 0 ) y-intercept: ( 0, −35) 2. Solve y completing the square x^2-14x=10 x = 7 + 59, 7 − 59 3. Solve by completing the square x^2+2x-15=0 x = 3, -5 4. Find the x intercepts of (x)=x^2+7x-3 " −7 + 61 % " −7 − 61 % x-intercepts: $ , 0 ', $ , 0 ' 2 2 # & # & 5. If a pro basketball player has a vertical leap of about 25 in, what is his hang time? Use the function v=48T^2 0.7 6. Solve for x x^2+18x+4=0 x = −9 + 77, −9 − 77 7. Solve for r r^2+3r=7 r= −3+ 37 −3− 37 , 2 2 8. Solve 3x^2-5x-11=0 find the x intercepts of f(x)=3x^2-5x-11 Solutions: 5 + 157 5 − 157 , 6 6 " 5 + 157 % x-intercepts: $ , 0 ', 6 # & " 5 − 157 % , 0' $ 6 # & 9. Solve for x 2(x-4)-(x+2)=(x+2)(x-4) x = 1, 2 10. Solve for x 1/x+1/x+16=1/15 x = 24, -10 11. x^2+3x-7=0 give an exact an approximate solutions to 3 decimal places. Exact solutions: −3+ 37 −3− 37 , 2 2 Approximate solutions: 1.541, -4.541
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