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Arlecino [84]
3 years ago
12

X² + ___ x + 49 plz answer as soon as possible

Mathematics
2 answers:
kykrilka [37]3 years ago
8 0
  • Answer:

<em>14</em>

  • Step-by-step explanation:

<em>(a + b)² = a² + 2ab + b²</em>

<em>x² + _x + 49</em>

<em>a = x</em>

<em>b = 7</em>

<em>2ab = 2×x×7 = 14x => 2b = 14</em>

skelet666 [1.2K]3 years ago
4 0

Answer:

\Huge \boxed{\mathrm{14}}

\rule[225]{225}{2}

Step-by-step explanation:

Square of a sum formula:

(a + b)^2  = a^2 + 2ab + b^2

x² + ___ x + 49

The value of a is x.

The value of b is 7, since 7² = 49.

x^2 +2(x)(7)+7^2

x^2 +14x+49

The missing coefficient is 14.

\rule[225]{225}{2}

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