Question

21) i) Add: 2x²+3x-4y+7 and 5x+4y-3 Regen ii) Subtract: (2x²–5x+4) - (x²+7x-8)​

Answer 1

Step-by-step explanation:

21) i) Add: 2x²+3x-4y+7 and 5x+4y-3 Regen ii) Subtract: (2x²–5x+4) - (x²+7x-8)

Answer 2

Answer:

i)

$2 {x}^{2} + 8x + 4$

ii)

${x }^{2} - 12x + 12$

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