Identify Form and Simplify: Identify the form of the polynomial and simplify if possible.We have 3x4+10x2+8. Notice it's a quadratic in form of x2.Let u=x2. Then the polynomial becomes 3u2+10u+8.
Factor Quadratic: Factor the quadratic 3u2+10u+8. We need two numbers that multiply to 3×8=24 and add up to 10. The numbers 6 and 4 work because 6×4=24 and 6+4=10. So, 3u2+10u+8 factors as (3u+4)(u+2).
Substitute Back: Substitute back x2 for u. Replace u with x2 in the factored form: (3x2+4)(x2+2).
More problems from Factor quadratics with leading coefficient 1