F.O.I.L

2 answers:

8 0

If you are talking about what is in between the two sets of parentheses then the answer would be multiplication hope that helped

baherus [9]3 years ago

4 0

The answer is x^2 -7x +12

so (x-4)(x-3) multiply each one

x*x is x^2 x*-3 is -3x

-4*x is -4x and -4*-3 is 12

combine like terms is -4x+-3x is -12x

put it all together now.

x^2 - 7x + 12

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sasho [114]

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3 0

3 years ago

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maks197457 [2]

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Step-by-step explanation:

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$\sum x_i^2=2.79^2\:+2.57^2+\:2.73^2\:+3.75^2\:+2.27^2+\:2.75^2+\:4.00^2+\:4.22^2+\:3.88^2+\:4.35^2+\:3.41^2+\:4.57^2+\:2.38^2+\:3.73^2\:+2.75^2+\:3.47^2+\:3.06^2\\\\\sum x_i^2=197.46$