Write an equation that has x=3 and x=7 as its only solutions.

do it fast

x² - 10x + 21 = 0

Step-by-step explanation:

We have to write an equation that has x = 3 and x = 7 are the only roots.

Therefore, the factors of the equation will be (x - 3) and (x - 7).

So, we can write the equation as (x - 3)(x - 7) = 0

⇒ x(x - 7) - 3(x - 7) = 0

⇒ x² - 10x + 21 = 0 (Answer)

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x ≥ 18 is your answer

step-by-step explanation:

let "a number" = x

(2/3)x + 17 ≥ 29

isolate the variable (x). do the opposite of pemdas (parenthesis, exponent (& root), multiplication, division, addition, subtraction).

first, subtract 17 from both sides.

(2/3)x + 17 (-17) ≥ 29 (-17)

(2/3)x ≥ 29 - 17

(2/3)x ≥ 12

next, multiply 3/2 to both sides to isolate the x

(3/2)(2/3)x ≥ 12(3/2)

x ≥ 12(3/2)

simplify. multiply, then divide

x ≥ (12 * 3)/2

x ≥ (36)/2

x ≥ 18

x ≥ 18 is your answer

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