SOLUTION: Find the product: (3x + 5)(4x - 1) Which of the following is the equation of a vertical line? x = y y = -4 y = 3x + 2 x = 8 Simplify: (-3a2b5)2 Find (x - 4)

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Find the product: (3x + 5)(4x - 1) Which of the following is the equation of a vertical line? x = y y = -4 y = 3x + 2 x = 8 Simplify: (-3a2b5)2 Find (x - 4)      Log On


   

Question 71205: Find the product: (3x + 5)(4x - 1)
Which of the following is the equation of a vertical line?
x = y
y = -4
y = 3x + 2
x = 8
Simplify: (-3a2b5)2
Find (x - 4)2
Please show how you work the equations?
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
USEING THE FOIL TECHNIQUE MULTIPLY THE FIRST TERMS, THEN THE OUTER TERMS, THEN THE INNER TERMS &THEN THE LAST TERMS.
(3x+5)(4x-1)=12x^2-5+20x-3x COMBINE LIKE TERMS.
12x^2+17x-5
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y=-4 is a verticle line through the point y=-4.
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+y+=+-4%29+ (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, y = -4).
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(-3a^2b^5)^2=(-3a^2b^5)(-3a^2b^5)=9a^4b^10
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(x-4)^2=(x-4)(x-4)=x^2-4x-4x+16=x^2-8x+16
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