O 20. The first three steps in the proof of the quadratic formula are shown. Step 1: ax? + bx +c = 0 Step 2: ax? + bx = - c Step 3: x+ x = - a What is the next step in the proof? h 12 x+ 4a a I= - + a a +x = - = 0

Q: 48ab2 +√75ab²

A: To simplify the following expression.

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A: Given query is to find the step where error was for the first time.

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Q: 10. 2r + 3y +3: = 29 3r+ 4y +5z = 40 -3r - 5y - 4: =-47

A: Given2x + 3y + 3z = 293x + 4y + 5z = 40-3x - 5y - 4z = -47In matrix form the system of equations can…

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Q: 14. Loren is solving an equation using the steps shown. Given: 2x + 4(x – 1) = 3(-x+ 2) Step 1: 2x +…

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Q: 1 -2 2-4. b₁ ]][2] [612] x2

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Q: (b) (1 + i)(3 – 4i)(4 – i) - i(2 + 2i)3 (c) (3 – 2i)² (T + i)100 (d) (T i) 100 -

A: Following are the properties for any complex number z=a+ib. z¯=a−ibz=z1z2z=z1z2z=a+ibz¯=z

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