geometry
posted by anonymous .
what is the value of "x" when y=0:
8x^2x5=y
eight times x squared minus x minus five equals y

Use the quadratic equation:
x=(1+sqrt(1+160))/16
check that, I did it in my head. 
do you know the anwser to the question above this one
Respond to this Question
Similar Questions

math
Which value(s) of x should be excluded for the polynomial? 
Math.
write an integer to represent a loss of 5 yards in football. –7 –5 5 7 Write the sum as a product, then simplify the product. (–8) + (–8) + (–8) + (–8) 2(–8) + 2(–8) = –30 4(–8) = –32 4(–8) = 32 5(–8) = –40 … 
Math Help.
write an integer to represent a loss of 5 yards in football. –7 –5 5 7 Write the sum as a product, then simplify the product. (–8) + (–8) + (–8) + (–8) 2(–8) + 2(–8) = –30 4(–8) = –32 4(–8) = 32 5(–8) = –40 … 
calculus
1.Solve the differential equation dy/dx= y^2/x^3 for y=f(x) with the condition y(1) = 1. 2.Solve the differential equation y prime equals the product of 2 times x and the square root of the quantity 1 minus y squared. Explain why the … 
Quick calc question
Which of the following definite integrals could be used to calculate the total area bounded by the graph of y = 1 – x2 and the xaxis? 
Quick calc question
Which of the following definite integrals could be used to calculate the total area bounded by the graph of y = 1 – x2 and the xaxis? 
Calculus
Which of the following definite integrals could be used to calculate the total area bounded by the graph of y = 1 – x2 and the xaxis? 
Quick calc question
Which of the following definite integrals could be used to calculate the total area bounded by the graph of y = 1 – x2 and the xaxis? 
Algebra
Solve the given polynomial equation. Use the Rational Zero Theorem and Descartes's Rule of Signs as an aid in obtaining the first root. 2 x cubed minus 5 x squared minus 5 x minus 1 equals 02x3−5x2−5x−1=0 
Calculus
Use geometry to evaluate the integral from negative 3 to 3 of f of x, dx for f of x equals the square root of the quantity 4 minus the square of the quantity x plus 1 for x is between negative 3 and 1 including negative 3 and 1, and …