Foundation January 2022 Paper 1 Q16

EdexcelFoundationCurrent spec6 marksIndices Manipulating Formulae/ Changing the Subject

(a) Simplify \(\quad a^7 \times a^4\) (1)

(b) Simplify \(\quad w^{15} \div w^3\) (1)

(d) Make \(t\) the subject of \(\quad c = t^3 - 8v\) (2)

Scheme	Marks
\(a^{11}\)	B1
	(1)

Scheme	Marks
\(w^{12}\)	B1
	(1)

Mark scheme (c)

Scheme	Marks
\(64x^{10}y^6\)	B2
	(2)

Notes

B2: if not B2 then award B1 for 2 correct parts as part of a product
eg \(kx^{10}y^6\) where \(k \neq 64\)
or \(64x^ky^6\) where \(k \neq 10\)
or \(64x^{10}y^k\) where \(k \neq 6\)

Scheme	Marks
\(c + 8v = t^3\)	M1
\(t = \sqrt[3]{c + 8v}\)	A1
	(2)
	(6 marks)