8. + -/1 points SPreCalc7 3.4.045. My Notes Ask Your Teacher Find all the real z

Question

8. + -/1 points SPreCalc7 3.4.045. My Notes Ask Your Teacher Find all the real zeros of the polynomial. Use the quadratic formula if necessary, as in Example 3(a). (Enter your answers as a comma-separated list. Enter including repetitions.) all answers P(x) = 4x3 + 6x2-5x-7 Need Help? Read It My Notes Ask Your Teacher 9. ÷ -11 points SPreCalc7 3.4.049. Find all the real zeros of the polynomial. Use the quadratic formula if necessary, as in Example 3(a). (Enter your answers as a comma-separated list. Enter all answers including repetitions.) P(x) =x4-9x3 + 24x2-9x-27 Need Help? Read it Watcht My Notes Ask Your Teacher 10. + -/11 points SPrecalc7 3.4.073. Show that the given values for a and b are lower and upper bounds for the real zeros of the polynomial. F1O F8 F7 F5 F6 F2 F3 sc FI 9

Explanation / Answer

P(x)=4x3+6x2-5x-7

P(x)=(x+1)(4x^2+2x-7)=0

x+1=0,4x^2+2x-7=0

x=-1,x=(sqrt(29)/4)-(1/4),((sqrt 29)/4) +(1/4)

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