4 years ago

Does anyone know the answer to it

Mathematics

1 answer:

Simora [160]4 years ago

6 0

Answer:

number 4

Step-by-step explanation:

you can not square root a negative number

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32. Which of the following is a correct<br> representation of 0.0000052

Anastaziya [24]

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4 years ago

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svet-max [94.6K]

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3 years ago

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Vladimir79 [104]

Answer:

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3 years ago

Solve<br> x2 - 8x + 14 = 2x - 7

BabaBlast [244]

Answer:

x=7, x=3

Step-by-step explanation:

$x^{2} -8x+14=2x-7$

$x^{2} -8x-2x+14+7=0$

$x^{2} -10x+21=0$

$\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}$

$x=$ $\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

positive

$x=\frac{-\left(-10\right)+\sqrt{\left(-10\right)^2-4\cdot \:1\cdot \:21}}{2\cdot \:1}$

$x=7$

negative

$x=\frac{-\left(-10\right)-\sqrt{\left(-10\right)^2-4\cdot \:1\cdot \:21}}{2\cdot \:1}$

$x=3$

7 0

4 years ago