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grigory [225]
3 years ago
8

Simplify the expression fully (3x2 + 7y) (2x2 – 3x + 9)

Mathematics
1 answer:
allsm [11]3 years ago
3 0

(3x2 + 7y) (2x2 – 3x + 9)
=(6+7y)(-3x+13)
=-18x+78-21xy+91y
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Answer:

Step-by-step explanation:

Given:

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                  Statements                            Reasons

1. RUTS is a rectangle                   1. Given

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3. ∠STU = ∠SRU = 90°                  3. Definition of a rectangle

4. ΔURS ≅ ΔSTU                           4. By the LL theorem of congruence

5. ∠USR ≅ ∠SUT                           5. CPCTC

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