You use the rules of BEDMAS so start with the brackets -[2(-17)] start with 2*-17 which is -34 then multiply -4*-5=20 so now you have 20-(-17)=37 butttt the question is asking to SIMPLIFY so you combine like terms which adds up to 37
Answer:
x^2 + 2xy + y ^2
Step-by-step explanation:
A = a^2
a = x + y
(x + y) + (x + y)
x^2 + xy + xy + y^2
x^2 + 2xy + y ^2
Answer:
There are 5 cats and 6 children
Step-by-step explanation:
Let x = number of cats
Let y= number of children
Counting heads gives 11
X+Y = 11 .....eq1
Counting feet gives 32
Cats has 4legs,child has 2 legs
4X + 2Y=32 ....eq2
X = 11 - Y
Put in eq2
4(11-Y) + 2Y = 32
44 - 4Y + 2Y=32
12=2Y
Y=12/2=6
Y=6= Children
Put Y=6 in eq2
X + 6=11
X=11-6=5
X= 5 = cats
2(4a^2 +a +3)
Factor out the 2
Answer:
Step-by-step explanation:
