Solve the following equations, giving your answers to $3$ significant figures where necessary. \({

Question

Solve the following equations, giving your answers to $3$ significant figures where necessary. ${{\left( x+2 \right)}^{2}}=25$ ${{\left( x-5 \right)}^{2}}=20$

Accepted Answer

(i) x = 3 or -7; (ii) x = 9.47 or 0.528.

Solving Quadratic Equations of the form \({{\left( x+a \right)}^{2}}=b\)

Solving Quadratic Equations of the form \({{\left( x+a \right)}^{2}}=b\)

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