Question

Please help me and my daughter.

Answer 1

Step-by-step explanation:

3x2−7x−20=03x2-7x-20=0

Use the quadratic formula to find the solutions.

−b±√b2−4(ac)2a-b±b2-4(ac)2a

Substitute the values a=3a=3, b=−7b=-7, and c=−20c=-20 into the quadratic formula and solve for xx.

7±√(−7)2−4⋅(3⋅−20)2⋅37±(-7)2-4⋅(3⋅-20)2⋅3

Simplify.

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x=7±176x=7±176

The final answer is the combination of both solutions.

x=4,−53

Answer 2

Answer:

you can either factorise or use tge formula method