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3 years ago

Solve the following quadratic equation by rearranging and then factorising x^2 + 7x + 19 = 9

Mathematics

2 answers:

IRISSAK [1]3 years ago

6 0

Answer:

x = -5 & x = -2

Step-by-step explanation:

x^2 + 7x +10 = 0 you takeaway 9 as quadratic equations have to equal 0

(x+5)(x+2) = 0 you find 2 numbers that go into 10 that add to make 7 and multiply to make 10

(x+5) = 0 so x =-5 & (x+2) = 0 so x =-2

wolverine [178]3 years ago

5 0

Answer:

your lucky you did have a online lessons earlll

Step-by-step explanation:

The following are the temperatures in °C for the first 14 days of January:

-6, -2.5, 2, 2.5, -0.5, 5, 10, -3, -7, 3, -1, 7, 1, 4.5

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3 years ago

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nadya68 [22]

Answer:

186 and 187

Step-by-step explanation:

Let n be the first integer.

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+186

--------

373

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