pack15483 pack15483

11-09-2019
Mathematics

contestada

Evaluate A 2-B 2 for A = 4 and B = -5.

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jimrgrant1 jimrgrant1

11-09-2019

Answer:

- 9

Step-by-step explanation:

Given

A² - B² ← substitute A = 4 and B = - 5 into the expression

= 4² - (- 5)²

= 16 - 25

= - 9

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