Triangle ABC is similar to triangle DEF.
1 answer:
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Answer:
11 + 6
Step-by-step explanation:
(3 + )²
= (3 + )( 3 +
)
Each term in the second factor is multiplied by each term in the first factor
= 3( 3 + ) +
( 3 +
)
Distribute each parenthesis noting that ×
= 2
= 9 + 3 + 3
+ 2 ← collect like terms
= 11 + 6