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Coordinate Geometry

Question

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Use suitable identities to find the following products:

(i) (x + 4)(x + 10)

Solution

x + 4)(x + 10)
(x + 4)(x + 10) = x² + (4 + 10)x + (4)(10)
| Using Identity IV
= x² + 14x + 40.

Some More Questions From Coordinate Geometry Chapter

Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer.

4x² - 3x + 7

Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer.

x¹⁰+ y³ + t⁵⁰

Write the coefficients of x² in each of the following:

2 + x² + x

Write the coefficients of x² in each of the following:
2 - x² + x³

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