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Ymorist [56]
3 years ago
12

QUESTION 1 (3 points)Solve the following equation. Show all work.4x² - 5 = 76​

Mathematics
2 answers:
klasskru [66]3 years ago
8 0

Answer:

X = 9/2

Step-by-step explanation:

4x² - 5 = 76

4x² = 76 + 5

4x² = 81

4x² = 9²

(2x)² = 9²

2x = 9

X = 9/2

weqwewe [10]3 years ago
5 0

Answer:

x_{1} =-\frac{9}{2} \\x_{2} = \frac{9}{2}

Step-by-step explanation:

4x^2 = 76 + 5\\4x^2 = 81\\x^2 = \frac{81}{4}\\ x = |\frac{9}{2}|

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