Question

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

Answer 1

`\Huge \boxed{\mathrm{14}}`

`\rule[225]{225}{2}`

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}`

Answer 2

• Answer:

14

• Explanation:

(a + b)² = a² + 2ab + b²

x² + _x + 49

a = x

b = 7

2ab = 2×x×7 = 14x => 2b = 14