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A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
Multiply: (2x - 2y - 3), (x + y + 5)
Solution:
Given, multiply (2x - 2y - 3), (x + y + 5)
⇒ (2x - 2y - 3) × (x + y + 5)
= 2x² + 2xy + 10x - 2xy - 2y² -10y - 3x - 3y - 15
= 2x² - 2y² + 10x - 3x -10y - 3y + 2xy - 2xy - 15
= 2x² - 2y² + 7x -13y - 15
✦ Try This: Multiply: (3a + 2b +5), (5a - 3b - 7)
Given, Multiply: (3a + 2b +5), (5a - 3b - 7)
⇒ (3a + 2b +5) × (5a - 3b - 7)
= 15a² - 9ab - 21a + 10ab - 6b² - 14b + 25a - 15b - 35
= 15a² + ab + 4a -29b- 6b² - 35
☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 9
NCERT Exemplar Class 8 Maths Chapter 7 Problem 83(xxii)
Multiply: (2x - 2y - 3), (x + y + 5)
Summary:
Multiplying (2x - 2y - 3), (x + y + 5) is 2x² - 2y² + 7x -13y - 15
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