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3 years ago

2:2x11(6+5)+1 HEELLLLLLLLPPPP

Mathematics

1 answer:

mariarad [96]3 years ago

5 0

Answer:

2.2×11×11+1

2.2×121+1

266.2+1

267.2

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4. D

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$x^2+25=0\\x^2=-25\\x=\pm\sqrt{-25}$

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(A)

$2x^2-7x-9=0\\\\\Delta=\sqrt{\left(-7\right)^2-4\cdot \:2\left(-9\right)}\\\Delta=\sqrt{\left(-7\right)^2+4\cdot \:2\cdot \:9}\\\Delta=\sqrt{121} \\\Delta=11$

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