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KiRa [710]
2 years ago
14

Could someone please help me asap? Thanks in advance! :)

Mathematics
1 answer:
Elden [556K]2 years ago
4 0

Answer:

A

Step-by-step explanation:

the standard form of a quadratic equation is

ax² + bx + c = 0 : a ≠ 0

obtain (5 + x)(5 - x) = 7 in this form by expanding the factors

25 - x ² = 7 ( subtract 7 from both sides )

18 - x² = 0 ( multiply through by - 1 )

x² - 18 = 0 ← in standard form

with a = 1, b= 0 and c = - 18 → A


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2 years ago
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3 years ago
Simplify 3a + 4b + 5c + (-2a) + b
ad-work [718]

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Step-by-step explanation:

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