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2 years ago

Solve for x. x2 − 9x + 20 = 0

Mathematics

2 answers:

nordsb [41]2 years ago

7 0

Answer:

x=4 or x=5

Step-by-step explanation:

Let's solve your equation step-by-step.

x2−9x+20=0

Step 1: Factor left side of equation.

(x−4)(x−5)=0

Step 2: Set factors equal to 0.

x−4=0 or x−5=0

x=4 or x=5

umka2103 [35]2 years ago

3 0

x has two values 4 and 5 by factorization or using the general formula

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2 years ago

If f(x)=x+3 and g(x)= x^2 -4 find the expression for g(f(x))

Maksim231197 [3]

Answer:g(f(x))= x^2 +6x+5

Step-by-step explanation:

g(f(x))= x^2 -4

g(f(x))= (x+3)^2 -4

g(f(x))= (x+3)(x+3) -4

g(f(x))= x^2 +6x+9-4

g(f(x))= x^2 +6x+5

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