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NeTakaya
3 years ago
11

Which is a solution to (x - 2)(x + 10) = 13 ?

Mathematics
2 answers:
Fed [463]3 years ago
6 0

Answer:

2 and -10.

Step-by-step explanation:

(x-2)(x+10)=13

x^{2} +10x-2x-20 =13

x^{2} +8x-20 =13

x1=\frac{-8+\sqrt[2]{64-4(-20)} }{2}

x1=\frac{-8+\sqrt[2]{64+80} }{2}

x1=\frac{-8+12 }{2}

x1=2.

x2=\frac{-8-\sqrt[2]{64-4(-20)} }{2}

x2=\frac{-8-\sqrt[2]{64+80} }{2}

x2=\frac{-8-12 }{2}

x2=-10.

stiv31 [10]3 years ago
4 0
The answer is:
x=3,-11
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