(x + a) (x + b) = x² + (a + b)x + ________.
Solution:
Answer is ab, We use distributive property and multiply to get the product.
(x + a) (x + b) = x ( x + b) + a ( x + b)
= x² + xb + ax + ab
= x² + (a + b) x + ab
✦ Try This: (x - a)(x - b) = x² - (a + b ) x +___________.
Answer is ab,
(x - a)(x - b) = x ( x - b) - a ( x - b)
= x² - xb - ax + ab
= x² - (a + b) x + ab
☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 9
NCERT Exemplar Class 8 Maths Chapter 7 Sample Problem 6
(x + a) (x + b) = x² + (a + b)x + _______
Summary:
Value of (x + a) (x + b) = x² + (a + b)x + ab
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