The sum of a number and its square is 42. which equation can be used to find the two numbers for which this is true?
x2 + x = 42
x2 + 2x = 42
x2 + x + 42 = 0
x2 + 2x + 42 = 0

The sum: "+"

a number: "x"

a square of a number: "x²"

x + x² = 42 → x² + x = 42

Step-by-step explanation:

Let

x------> the number

we know that

The algebraic expression that represent the situation is equal to

----> quadratic equation

using a graphing tool-----> to resolve the quadratic equation

see the attached figure

The solutions are

Verify each solution

For

substitute in the expression

-----> is true

For

substitute in the expression

-----> is true

62.5 paisa

step-by-step explanation:

4000*70 = 280000

280000-(2000*90) = 100000

4000-2400 = 1600

100000/1600 = 62.5

( give brainliest)

i dont know sorry

step-by-step explanation: