Factorise 8(4x+5y)sq - 12(4x+5y)
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8(4x+5y)²-12(4x+5y)=0
⇒(4x+5y){8(4x+5y)-12}=0
⇒32x+40y-12=0
⇒8x+10y-3=0
⇒8x+10y=3
⇒(4x+5y){8(4x+5y)-12}=0
⇒32x+40y-12=0
⇒8x+10y-3=0
⇒8x+10y=3
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