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10-07-2020
Mathematics

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x2+6x+c what is the c value

x26xc what is the c value class=

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Аноним Аноним

10-07-2020

Answer:

c = 9

Step-by-step explanation:

(a + b)² = a² + 2ab + b²

x² + 6x + c =

= x² + 2x·3 + c

2x·3 = 2a·b => √c = 3 => c = 3² => c = 9

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