Factorise: 9x² + 4 + 12x - a² + 2ab + b²
ⓐⓝⓢⓦⓔⓡ ⓘⓣ ⓕⓐⓢⓣ ⓖⓤⓨⓢ
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Answer:
this is the factorisation
Step-by-step explanation:
(3x)2+(2)2+2(3x)(2)
= (3x+2)(3x+2)
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