${(a + b)^2 = a^2 + 2ab + b^2}$ ${(a - b)^2 = a^2 - 2ab + b^2}$ ${(a + b)(a - b) = a^2 - b^2}$

Question

${(a + b)^2 = a^2 + 2ab + b^2}$ ${(a - b)^2 = a^2 - 2ab + b^2}$ ${(a + b)(a - b) = a^2 - b^2}$ Expand each of the following expressions. ${{\left( x+4 \right)}^{2}}$ ${{\left( 3x+8 \right)}^{2}}$ ${{\left( 7-x \right)}^{2}}$ ${{\left( 3x-4y \right)}^{2}}$ $\left( x-3 \right)\left( x+3 \right)$ $\left( 3x-4y \right)\left( 3x+4y \right)$

Accepted Answer

(a) $x^2 + 8x + 16$ (b) $9x^2 + 48x + 64$ (c) $49 - 14x + x^2$ (d) $9x^2 - 24xy + 16y^2$ (e) $x^2 - 9$ (f) $9x^2 - 16y^2$

Applying Special Algebraic Formulae

Applying Special Algebraic Formulae

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