Question

(i) (3x +4) (3x - 5)​

Answer 1

Answer:

answer is 6x + 9

please mark brainliest

Answer 2

Answer:

Question :-

$(3x +4) (3x - 5)$

Formula used here :-

$(x +a) (x + b) = {x}^{2} + (a + b)x + ab$

Required Answer :-

${x}^{2} - x - 20$

Solution :-

${x}^{2} + (a + b)x + ab$

$= {x}^{2} + (4 + ( - 5))x + 4 \times - 5$

$= {x}^{2} + (4 - 5)x - 20$

${x}^{2} + ( - 1)x - 20$

${x}^{2} - x - 20$