Can you help me with this it's synthetic substitution or direct substitution

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[Eqn 3]

f(x) = x³ + 3x² + 6x - 11 when x = 5

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[Eqn 4]

f(x)=x³ - x² + 12x - 15 when x = 1

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[Eqn 5]

f(x) = 2x³ + 6x² + 4x + 8 when x = 2

h df tyjgtyj ttd y ytkgfty ty

step-by-step explanation:

tyty jry j y yj yttj yhgtyj y ghyj ytthj

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it