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You “Explain photosynthesis”

Photosynthesis

Plants turn sunlight, water and carbon dioxide into glucose and oxygen.

6CO₂ + 6H₂O + light → C₆H₁₂O₆ + 6O₂

Labeled diagram of a chloroplast showing sunlight, water, and carbon dioxide going in, and glucose and oxygen coming out — Figure 1 — chloroplast diagram

Electrolysis of Water

An electric current splits water into hydrogen and oxygen gas.

2H₂O → 2H₂ + O₂

Cathode (−) → H₂ · Anode (+) → O₂

Figure 1 — electrolysis cell

Expanding (x + 3)²

What is expansion?

To expand means to write it as a sum of terms.

(a + b)² = a² + 2ab + b²

Step-by-step

(x + 3)²

Here, a = x and b = 3

x² + 2·x·3 + 3²

Final expanded form

x² + 6x + 9

No brackets left.

x²6x9

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