Question

(4rxt – 8r2x + x²) – (6rx² + 5rxt – 2x)

Find the sum or difference

Please help! I’m stuck and can’t figure it out

Answer 1

`sum = (4 - 5)rxt - (8 + 6) {rx}^(2) + (1 + 2)x \\ = - rxt - 14 {rx}^(2) + 3x \\ \\ difference = (4 + 5)rxt + (6 - 8) {rx}^(2) + ( - 2 + 1)x \\ = 9rxt - 2 {rx}^(2) - x`

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