Hello,
z=-2x²+15x-3y²+21y-6
=-2(x²-2*15/2*x+(15/2)²) -3(y²-2*7/2y+(7/2)²)-6+2*225/4+3*49/4
=-2(x-15/2)²-3(y-7/2)²+573/4
The max is for x-15/2=0 and y-7/2=0 thus 537/4
ITS A i jus did it its bot be or c or d
Answer:
no
Step-by-step explanation:
pls give brainliest :)
Answer:
the answer is...
Step-by-step explanation:
Answer:
#5
Area = Area of bigger triangle - Area of small triangle

#8
Area = area of square + area of two right angled triangles
