julia has framed one of her paintings. the painting is square, and the frame is 5cm wide. please help with questions a-d
1 answer:
i) x²
ii) (x-10)²
b) (x-10)² = x² - 20x + 100
c) (30-10)² = 400 cm²
d) (x-10)² = 144 => x-10 = √144 => x = 12 + 10 = 22 cm
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