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Maths-

General

Easy

Question

Use the table method to multiply a binomial with a trinomial.
(2𝑥 − 5) (−3𝑥² + 4𝑥 − 7)

The correct answer is: -6x3 + 23x2 - 34x + 35.

Answer:

Given:

(2x - 5) (-3x² + 4x - 7)

Step 1:

Step 2:

Add all terms:
(-6x³ + 8x² - 14x + 15x² - 20x + 35)
= -6x³ + 23x² - 34x+ 35
Hence,
(2x - 5) (-3x² + 4x - 7) = -6x³ + 23x² - 34x+ 35

Final Answer:

-6x³ + 23x² - 34x+ 35.

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(ii) (3a + 2b) (5a + 7b)

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This question can be easily solved by using the formula
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parallel

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