Find zeroes of polynomial 5✓5x²+30x+8✓5
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to find zeroes equate the polynomial to zero
5√5x^2+30x+8√5=0
5√5x^2+10x+20x+8√5=0
5x(√5x+2)+4√5(√5x+2)=0
(5x+4√5)(√5x+2)=0
x= -4√5/5 or x= -2√5/5
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