Question

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MATH QUESTION

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Answer 1

1) ans: (-1)¹³ × 2⁶ × 2³

= -1 × 64 × 8

= -64 × 8

= -512

2) ans: -7xy -3y² +2x²

2x² -3y² -7xy ____(1)

3x² -4y² -6xy ____(2)

adding equation (1) & (2)

2x² -3y² -7xy ____(1)

+ 3x² -4y² -6xy ____(2)

____________

5x² -7y² -13xy