By expanding $\left(b+7\right)^2$(b+7)2, we want to determine the factorisation for $b^2+14b+49$b2+14b+49.

First expand $\left(b+7\right)^2$(b+7)2.

Hence, factorise $b^2+14b+49$b2+14b+49.

By expanding $\left(y-5\right)^2$(y−5)2, we want to determine the factorisation for $y^2-10y+25$y2−10y+25.

Factorise $x^2+10x+25$x2+10x+25

Factorise $x^2+14x+49$x2+14x+49

Form and solve linear equations and inequations, quadratic and simple exponential equations, and simultaneous equations with two unknowns

Apply algebraic procedures in solving problems