If 5 is a root of the quadratic equation x²+4x-45=0 find the other root of the equation
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-9

Step-by-step explanation:

x² + 4x - 45

x² + (9x - 5x) - 45

x² + 9x - 5x - 45

x(x + 9) - 5(x + 9)

(x + 9)(x - 5)

x + 9 = 0

x = -9

-9

Step-by-step explanation:

If 5 is a root of the quadric equation, then

x²+4x-45=0

x²-5x+9x-45=0

x(x-5)+9(x-5)=0

(x-5)(x+9)=0

The other root is -9

C.) x = -45/4

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right  

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of Equality

Step-by-step explanation:

Step 1: Define

Identify

-8x = 90

Step 2: Solve for x

[Division Property of Equality] Divide -8 on both sides:                                x = 90/-8Simplify:                                                                                                             x = -45/4