Question

9. Simplify the expression and find its value when
x = -3 and y = +5:
12(x² + 2xy + 5 - xy + y²​

Answer 1

Answer:

288

Step-by-step explanation:

12(x ka square+2xy+60-12xy+12y Ka square)

12x Ka square+24xy +60-12xy +12y Ka square

12x Ka square+24xy-12xy+12y Ka square+60

12x ka square+12xy+12y ka square+60

x= -3 ,y= 5

12×(-3)Ka square+12×(-3)×(5)+12×(5) Ka square+60

12×9+(-36)×5+12×25+60

108-180+300+60

-72+360

288

Answer 2

12 [(-3²)+2×-3×5+5-3×5+(5)²]

12(9-30+5-15+25)

12×-6

-72