How do you find the zeros of g(x)=x4−5x2−36? Precalculus Complex Zeros Complex Conjugate Zeros 1 Answer Douglas K. Nov 1, 2016 g(x)=x4−5x2−36 has 4 zeros, x=−3,3,−2iand2i Explanation: Given: g(x)=x4−5x2−36 Let u=x2 g(u)=u2−5u−36=0 0=u2−5u−36 0=(u−9)(u+4) u=9andu=−4 x=±3andx=±2i g(x)=x4−5x2−36 has 4 zeros, x=−3,3,−2iand2i Answer link Related questions What is a complex conjugate? How do I find a complex conjugate? What is the conjugate zeros theorem? How do I use the conjugate zeros theorem? What is the conjugate pair theorem? How do I find the complex conjugate of 10+6i? How do I find the complex conjugate of 14+12i? What is the complex conjugate for the number 7−3i? What is the complex conjugate of 3i+4? What is the complex conjugate of a−bi? See all questions in Complex Conjugate Zeros Impact of this question 1874 views around the world You can reuse this answer Creative Commons License