The answer is: -3y+9z
This is because you simply switch the sign for every number in the parentheses.
Hope this helps!
5 and 3 = 8 liters , 5 and 4 = 9 liters, and 3 and 4 = 7 liters.
8 + 7 + 8 + 7 = 30 liters, so he can take the 5 liter bucket with the 3 liter bucket twice, and then use the 3 liter bucket and the 4 liter bucket twice.
Answer:
x = ± 2.45
Step-by-step explanation:
Given
8x² - 48 = 0 ( add 48 to both sides )
8x² = 48 ( divide both sides by 8 )
x² = 6 ( take the square root of both sides )
x = ± = ± 2.45 ( nearest hundredth )
Remember
a^2-b^2=(a-b)(a+b)
a.
ok so look at last bit
-9x^2+1
can be rearanged into
1-9x^2
look familiar?
1^2-(3x)^2
(1-3x)(1+3x) or
(1-3x)(3x+1)
we nowhave
(3x+1)(5x-4)-(x-12)(3x+1)+(1-3x)(3x+1)
factor out (3x+1)
(3x+1)(5x-4-(x-12)+1-3x)
(3x+1)(2x-3-x+12)
(3x+1)(x+9)
b.
easy
a^2-b^2=(a-b)(a+b)
(4x+5)^2-(2x-3)^2=
(4x+5-(2x-3))(4x+5+2x-3)=
(4x+5-2x+3)(6x+2)=
(2x+8)(6x+2)
we can factor out the 2 from each
(4)(x+2)(3x+1)
a(x)=(3x+1)(x+9)
b(x)=(4)(x+2)(3x+1)
Answer:
graph A
Step-by-step explanation: