Question

25b²x²+90b²x+81b² factorise​

Answer 1

Answer:

Step-by-step explanation:

$25b^2x^2+90b^2x+81b^2\\\\Now 81*25=2025\\2025=5*5*3*3*3*3=45*45\\\\25b^2x^2+45b^2x+45b^2x+81b^2\\=5b^2x(5x+9)+9b^2(5x+9)\\=(5b^2x+9b^2)(5x+9)$