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38 votes
4x^2-42x+76 please help

User Tuffwer
by
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2 Answers

22 votes
22 votes

Answer:

2(2x2−21x+38)

Explanation:

Factor 4x2−42x+76

4x2−42x+76

=2(2x2−21x+38)

User Steve De Caux
by
2.7k points
13 votes
13 votes

Answer:

x= 8.17 or x= 2.3

Explanation:

Solving for x:

4x^2-42x+76

a=4

b=-42

c=76

Using quadratic formula (attached):

-(-42) ±
\sqrt(-42)^2-4(4)(76)/2(4)

= 42±
\sqrt1764 - 1216/8

=42±23.4(rounded off)/8

So:

42 + 23.4/8 or 42 - 23.4/8

x= 8.17 or x= 2.3

factoring only:

4x^2-42x+76

2(2x^2-21x+38)

hope this helps you :)

4x^2-42x+76 please help-example-1
User Arheops
by
3.2k points