factorise (4 y - 5)²+80y
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8
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25
Answer:
(4y-5) ²+80y
6y²-40y+25+80y
16y²+40y+25
16y²+(20+20)y +25
16y²+20y+20y+25
4y(4y+5) +5(4y+5)
(4y+5) (4y+5)
=(4y+5) ² (ans)
hope it's your answer❤
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