Question

Add the following algebraic expressions horizontally.
a)(2x^2-3) + (4x^2-4)
b)(3x^4-2x+4) + (3x^2+5x+8)

Answer 1

Answer:

$a) \\ {2x}^{2} - 3 + {4x}^{2} - 4 \\ {2x}^{2} + {4x}^{2} - 3 - 4 \\ {6x}^{2} - 7 \\ \\ b) \\ {3x}^{4} - 2x + 4 + {3x}^{2} + 5x + 8 \\ {3x}^{4} + {3x}^{2} - 2x + 5x + 8 \\ {3x}^{4} + {3x}^{2} + 3x + 8$

Answer 2

Answer:

1. $\left(2x^2-3\right)+\left(4x^2-4\right)$

$=2x^2-3+4x^2-4$

$=2x^2+4x^2-3-4$

$=6x^2-3-4$

$=6x^2-7$

2. $(3x^4-2x+4) + (3x^2+5x+8)$

$=3x^4-2x+4+3x^2+5x+8$

$=3x^4+3x^2-2x+5x+4+8$

$=3x^4+3x^2+3x+4+8$

$=3x^4+3x^2+3x+12$

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