Question

4(3x+4y)²+12(3x+4y)(2x+5y)+9(2x+5y)²​

Answer 1

Answer:

4(3x+4y)²+12(3x+4y)(2x+5y)+9(2x+5y)²

= {2(3x+4y)}²+2.2(3x+4y).3(2x+5y)+{3(2x+5y)}²

= (6x+4y)²+2.2(3x+4y).3(2x+5y)+(6x+15y)²

= (6x+4y+6x+15y)²

= (12x+19y)²

= (12x+19y)(12x+19y)

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Answer 2

Answer:

68x+8+114y

Step-by-step explanation:

=12x + 16y +4s+36x+48y+2x+5y+18x+45y+4s =12x+2x+18x+36x4+4+16y+48y+5y+45y

=68x+8+114y