GCSE Maths Practice: quadratic-equations

Question 5 of 10

Solve a quadratic after factoring out the GCF.

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\( \text{Solve the quadratic equation: } 5x^2 + 20x + 15 = 0 \)

Choose one option:

Always check for common factors first. Then factor quadratic.

Divide out 5: \(x^2+4x+3=0\), then factor as \((x+1)(x+3)=0\).