7x + 4{x2 = (5x = 10)} - 3(2 - x = (3x2 + x)}
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Answer:
x2 + 15x - 6
Step-by-step explanation:
= 7x + 4 {x2 ÷ (5x/10)} – 3 {2 – x3 ÷ (3x2/x)}
= 7x + 4 {x2 ÷ x/2} – 3 {2 – x3 ÷ 3x} = 7x + 4 {x2 × 2/x} – 3{2 – ( x3/3x)}
= 7x + 8x – 6 + x2
= x2 + 15x - 6
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