Answer:
300
Step-by-step explanation:
(20+10)·(20-10)
1. Simplify: 30·10
2. Multiply: 300
(20+10) • (20-10)
= 30 • 10
= 300
ANSWER
On photo
EXPLANATION
Use the quadratic formula since the equation doesn't factorize not simplify by 3
It must be 3/2.........
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