3 years ago

Which of the following shows the correct simplification of the quadratic formula used to solve 8x2 - 2x = 1?

Mathematics

2 answers:

spayn [35]3 years ago

8 0

Step-by-step explanation:

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laiz [17]3 years ago

4 0

Answer:

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Y = x^3 + 5x^2 + 3x x= -3

dexar [7]

Answer:

Step-by-step explanation:

-3^3 +5*(3)^2 +3*-3

-27+5*9+(-9)

-27+45-9

8 0

3 years ago

Read 2 more answers

The area of a rectangle is 27 m^2 , and the length of the rectangle is 3 m less than twice the width. Find the dimensions of the

vagabundo [1.1K]

Let $L$ be the length of the rectangle and $W$ be the width. In the problem it is given that $L=2W-3$ . It is also given that the area $LW=27$ . Substituting in the length in terms of width, we have $W(2W-3)=27 \\ 2W^2-3W-27=0 \\ (2W-9)(W+3)=0$ . Using the zero product property, $2W-9=0 \text{ or } W+3=0$ . Solving these we get the width $W=4.5 \text{ or } -3$ . However, it doesn't make sense for the width to be negative, so the width must be $\boxed{4.5 \text{ m}}$ . From that we can tell the length $L=2(4.5)-3=\boxed{6 \text{ m}}$ .