Question

(2x+3)²=81 by factorsation method

Answer 1

hope this answer might help you

Answer 2

$(2x + 3) {}^{2} = 81$

$(2x + 3) {}^{2} - 9 {}^{2}$


Now apply

$(a {}^{2} - b {}^{2} ) = (a + b)(a - b)$

$(2x + 3 + 9)(2x + 3 - 9)$

$(2x + 12)(2x - 6)$


$(x + 6)(x - 3)$


Thanks