Question

t的平方-16+3t的因式分解？

Answer 1

t的平方-16+3t
=t的平方+3t+9/4-16-9/4
=(t+3/2)(t+3/2)-73/4
或者求根公式
=（t-t1)(t-t2)

Answer 2

t^2一16+3t
=t^2+3t+9/4一73/4
=(t+3/2)^2一(√73/2)^2
=[t+(3+√73)/2][t+(3一√73)/2]。