Factorisation 1) 16x^2 + 72x + 81
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16x²+72x+81
16x²+36x+36x+81
(16x²+36x)+(36x+81)
4x(4x+9)+9(4x+9)
(4x+9)(4x+9)
GautamJoshi71:
thanks for helping me.
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