find zeros of 15x²+16x+4
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Answer:
x=-2/5,-2/3
Step-by-step explanation:
15x²+16x+4=0
15x²+10x+6x+4=0
5x(3x+2)+2(3x+2)=0
(5x+2)(3x+2)=0
Either 5x+2=0 or 3x+2=0
5x+2=0
5x=-2
x=-2/5
or
3x+2=0
3x=-2
x=-2/3
Therefore, x=-2/5,-2/3
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