Question

(3x+5)² please solve this​

Answer 1

Answer:

(a+b)2=a2+2ab+b2

(a−b)2=a2−2ab+b2

Similarly

(3x+5)2−(5x−1)2=(9x2+30x+25)−(25x2−10x+1)

=9x2+25+30x−25x2+10x–1

Separate the like terms,

=9x2−25x2+30x+10x–1+25

=−16x2+40x+24

=−8(2x2−5x−3)

=−8(2x2+x−6x−3)

=−8[x(2x+1)−3(2x+1)]

−8(x−3)(2x+1)⟹8(3−x)(2x+1)

Answer 2

( 3x + 5 ) ²

your answer : 9x² + 30x + 25