factorise 2y^2+15y+28=0
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Step-by-step explanation:
2y^2+15y+28=0
=>2y^2+8y+7y+28=0
=>2y(y+4)+7(y+4)=0
=>(y+4)(2y+7)=0
y= -4 2y+7=0
=>2y= -7
=>y = -7/2
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