Question

1.
Add:
(a) 7x² + 3x, 9x - 5x²
(c) 5x² - 2x - 3, 10x² - 5 -7x² + 6x + 9
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Answer 1

Answer:

a)2x^2 + 12x

b)8x^2 + 4x + 1

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Answer 2

Answer:

(a)(7x^2+3x)+(-5x^2+9x)

=7x^2-5x^2+3x+9x

=2x^2+12x

(b)(5x^2-2x-3)+(10x^2-7x^2+6x+4)

=5x^2+3x^2-2x+6x-3+4

=8x^2+4x+1