Question

What is Foil Method give atleast one example​

Answer 1

What is Foil Method?

A foil method is a technique where two or more binomials multiply.

• First
• Outer
• Inner
• Last

Example 1

`\tt{(b + 3) (b + 7)}`

`\tt{F: (b)(b) = b^2}`

`\tt{O: (b)(7) = b7}`

`\tt{I: (3)(b) = 3b}`

`\tt{L:(3)(7) = 37}`

`\tt{=b^2 +7b+3b+21}`

`= \boxed{ \tt{b^2 +10b+2}}`

Example 2

`\tt{(x + 3)^2}`

`\tt{F: (x)(x) = x^2}`

`\tt{O: (x)(3) = x3}`

`\tt{I: (3)(x) = 3x}`

`\tt{L:(3)(3) = 9}`

`\tt{=x^2 +3x+3x+9}`

`= \boxed{ \tt{x^2 +6x+9}}`